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61960056960 = 2735231403081
BaseRepresentation
bin111001101101000110…
…110111000010000000
312220221002210000102110
4321231012313002000
52003343233310320
644244123015320
74322266536324
oct715506670200
9186832700373
1061960056960
112430592294a
121001236a540
135ac585a8c9
142ddad11984
1519298755e0
hexe6d1b7080

61960056960 has 128 divisors (see below), whose sum is σ = 206084684160. Its totient is φ = 15804293120.

The previous prime is 61960056959. The next prime is 61960056967. The reversal of 61960056960 is 6965006916.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (61960056967) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 657381 + ... + 745700.

It is an arithmetic number, because the mean of its divisors is an integer number (1610036595).

Almost surely, 261960056960 is an apocalyptic number.

61960056960 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61960056960 is an abundant number, since it is smaller than the sum of its proper divisors (144124627200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61960056960 is a wasteful number, since it uses less digits than its factorization.

61960056960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1403126 (or 1403114 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 48.

The spelling of 61960056960 in words is "sixty-one billion, nine hundred sixty million, fifty-six thousand, nine hundred sixty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 23 24 30 32 40 46 48 60 64 69 80 92 96 115 120 128 138 160 184 192 230 240 276 320 345 368 384 460 480 552 640 690 736 920 960 1104 1380 1472 1840 1920 2208 2760 2944 3680 4416 5520 7360 8832 11040 14720 22080 44160 1403081 2806162 4209243 5612324 7015405 8418486 11224648 14030810 16836972 21046215 22449296 28061620 32270863 33673944 42092430 44898592 56123240 64541726 67347888 84184860 89797184 96812589 112246480 129083452 134695776 161354315 168369720 179594368 193625178 224492960 258166904 269391552 322708630 336739440 387250356 448985920 484062945 516333808 538783104 645417260 673478880 774500712 897971840 968125890 1032667616 1290834520 1346957760 1549001424 1936251780 2065335232 2581669040 2693915520 3098002848 3872503560 4130670464 5163338080 6196005696 7745007120 10326676160 12392011392 15490014240 20653352320 30980028480 61960056960