129957434964 has 96 divisors (see below), whose sum is σ = 386741062400. Its totient is φ = 36968503680.

The previous prime is 129957434941. The next prime is 129957435001. The reversal of 129957434964 is 469434759921.

129957434964 is a `hidden beast` number, since 1 + 2 + 99 + 57 + 4 + 3 + 496 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 202207 + ... + 548454.

Almost surely, 2^129957434964 is an apocalyptic number.

129957434964 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

129957434964 is an abundant number, since it is smaller than the sum of its proper divisors (256783627436).

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

129957434964 is a wasteful number, since it uses less digits than its factorization.

129957434964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750910 (or 750902 counting only the distinct ones).

The product of its digits is 58786560, while the sum is 63.

The spelling of 129957434964 in words is "one hundred twenty-nine billion, nine hundred fifty-seven million, four hundred thirty-four thousand, nine hundred sixty-four".