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129263162680 = 23525135935863
BaseRepresentation
bin111100001100010101…
…1110101010100111000
3110100122120110000211201
41320120223311110320
54104212332201210
6135214354103544
712224155516411
oct1703053652470
9410576400751
10129263162680
114a90275a373
1221075b7abb4
13c260338312
1463836a2808
15356831653a
hex1e18af5538

129263162680 has 64 divisors (see below), whose sum is σ = 292822387200. Its totient is φ = 51354384000.

The previous prime is 129263162663. The next prime is 129263162681. The reversal of 129263162680 is 86261362921.

It is a super-2 number, since 2×1292631626802 (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 129263162680.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129263162681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3586429 + ... + 3622291.

It is an arithmetic number, because the mean of its divisors is an integer number (4575349800).

Almost surely, 2129263162680 is an apocalyptic number.

129263162680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129263162680 is an abundant number, since it is smaller than the sum of its proper divisors (163559224520).

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

129263162680 is a wasteful number, since it uses less digits than its factorization.

129263162680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36484 (or 36480 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 46.

The spelling of 129263162680 in words is "one hundred twenty-nine billion, two hundred sixty-three million, one hundred sixty-two thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 251 359 502 718 1004 1255 1436 1795 2008 2510 2872 3590 5020 7180 10040 14360 35863 71726 90109 143452 179315 180218 286904 358630 360436 450545 717260 720872 901090 1434520 1802180 3604360 9001613 12874817 18003226 25749634 36006452 45008065 51499268 64374085 72012904 90016130 102998536 128748170 180032260 257496340 360064520 514992680 3231579067 6463158134 12926316268 16157895335 25852632536 32315790670 64631581340 129263162680