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102981669861824 = 2613252614899887
BaseRepresentation
bin10111011010100101001001…
…110110011011100111000000
3111111121221200122012022021022
4113122211021312123213000
5101444222424441034244
61003005043115445012
730456115531612265
oct2732451166334700
9444557618168238
10102981669861824
112a8a430aa01826
12b672654a56768
13456018c224930
141b604a750126c
15bd8bc9b966ee
hex5da949d9b9c0

102981669861824 has 56 divisors (see below), whose sum is σ = 220082565826368. Its totient is φ = 47528110218240.

The previous prime is 102981669861809. The next prime is 102981669861841. The reversal of 102981669861824 is 428168966189201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18567209 + ... + 23467095.

It is an arithmetic number, because the mean of its divisors is an integer number (3930045818328).

Almost surely, 2102981669861824 is an apocalyptic number.

It is an amenable number.

102981669861824 is an abundant number, since it is smaller than the sum of its proper divisors (117100895964544).

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

102981669861824 is a wasteful number, since it uses less digits than its factorization.

102981669861824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4925173 (or 4925163 counting only the distinct ones).

The product of its (nonzero) digits is 143327232, while the sum is 71.

The spelling of 102981669861824 in words is "one hundred two trillion, nine hundred eighty-one billion, six hundred sixty-nine million, eight hundred sixty-one thousand, eight hundred twenty-four".

Divisors: 1 2 4 8 13 16 26 32 52 64 104 208 416 832 25261 50522 101044 202088 328393 404176 656786 808352 1313572 1616704 2627144 4899887 5254288 9799774 10508576 19599548 21017152 39199096 63698531 78398192 127397062 156796384 254794124 313592768 509588248 1019176496 2038352992 4076705984 123776045507 247552091014 495104182028 990208364056 1609088591591 1980416728112 3218177183182 3960833456224 6436354366364 7921666912448 12872708732728 25745417465456 51490834930912 102981669861824