129682690560 has 120 divisors (see below), whose sum is σ = 449127710460. Its totient is φ = 34582044672.

The previous prime is 129682690499. The next prime is 129682690591. The reversal of 129682690560 is 65096286921.

It is a happy number.

129682690560 is a `hidden beast` number, since 12 + 9 + 6 + 8 + 2 + 69 + 0 + 560 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 128255664384 + 1427026176 = 358128^2 + 37776^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-2 number, since 2×129682690560² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 129682690497 and 129682690506.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2791255 + ... + 2837334.

Almost surely, 2^129682690560 is an apocalyptic number.

129682690560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129682690560 is an abundant number, since it is smaller than the sum of its proper divisors (319445019900).

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

129682690560 is an equidigital number, since it uses as much as digits as its factorization.

129682690560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5628618 (or 5628599 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

The spelling of 129682690560 in words is "one hundred twenty-nine billion, six hundred eighty-two million, six hundred ninety thousand, five hundred sixty".