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20315640611260 = 22547173124927073
BaseRepresentation
bin1001001111010000110101…
…00010101100000110111100
32122221011012220221220112101
410213220122202230012330
510130322412444030020
6111112513151514444
74164520340655061
oct447503242540674
978834186856471
1020315640611260
1165228a6552045
122341382b28a24
13b449ab5a60b7
145033d46dcc68
152536ca6ea00a
hex127a1a8ac1bc

20315640611260 has 48 divisors (see below), whose sum is σ = 43822418726016. Its totient is φ = 7907383949312.

The previous prime is 20315640611237. The next prime is 20315640611293. The reversal of 20315640611260 is 6211604651302.

It is a super-3 number, since 3×203156406112603 (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62300917 + ... + 62626156.

It is an arithmetic number, because the mean of its divisors is an integer number (912967056792).

Almost surely, 220315640611260 is an apocalyptic number.

20315640611260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20315640611260 is an abundant number, since it is smaller than the sum of its proper divisors (23506778114756).

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

20315640611260 is a wasteful number, since it uses less digits than its factorization.

20315640611260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124927302 (or 124927300 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The spelling of 20315640611260 in words is "twenty trillion, three hundred fifteen billion, six hundred forty million, six hundred eleven thousand, two hundred sixty".

Divisors: 1 2 4 5 10 20 47 94 173 188 235 346 470 692 865 940 1730 3460 8131 16262 32524 40655 81310 162620 124927073 249854146 499708292 624635365 1249270730 2498541460 5871572431 11743144862 21612383629 23486289724 29357862155 43224767258 58715724310 86449534516 108061918145 117431448620 216123836290 432247672580 1015782030563 2031564061126 4063128122252 5078910152815 10157820305630 20315640611260