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12715715760 = 24351121743599
BaseRepresentation
bin10111101011110101…
…00110110010110000
31012211011212021210120
423311322212302300
5202020210401020
65501433530240
7630051541416
oct136572466260
935734767716
1012715715760
115435765500
12256a573980
131278517287
14888ac72b6
154e64e9740
hex2f5ea6cb0

12715715760 has 480 divisors, whose sum is σ = 47021990400. Its totient is φ = 2829066240.

The previous prime is 12715715729. The next prime is 12715715783. The reversal of 12715715760 is 6751751721.

12715715760 = T12816 + T12817 + ... + T12968.

It is a super-2 number, since 2×127157157602 (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 21227941 + ... + 21228539.

It is an arithmetic number, because the mean of its divisors is an integer number (97962480).

Almost surely, 212715715760 is an apocalyptic number.

12715715760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12715715760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23510995200).

12715715760 is an abundant number, since it is smaller than the sum of its proper divisors (34306274640).

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

12715715760 is a wasteful number, since it uses less digits than its factorization.

12715715760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697 (or 680 counting only the distinct ones).

The product of its (nonzero) digits is 102900, while the sum is 42.

The spelling of 12715715760 in words is "twelve billion, seven hundred fifteen million, seven hundred fifteen thousand, seven hundred sixty".