129532715520 has 160 divisors (see below), whose sum is σ = 445954082112. Its totient is φ = 31884951552.

The previous prime is 129532715513. The next prime is 129532715537. The reversal of 129532715520 is 25517235921.

It is a tau number, because it is divible by the number of its divisors (160).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 548862 + ... + 748541.

Almost surely, 2^129532715520 is an apocalyptic number.

129532715520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129532715520 is an abundant number, since it is smaller than the sum of its proper divisors (316421366592).

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

129532715520 is a wasteful number, since it uses less digits than its factorization.

129532715520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1297442 (or 1297426 counting only the distinct ones).

The product of its (nonzero) digits is 189000, while the sum is 42.

The spelling of 129532715520 in words is "one hundred twenty-nine billion, five hundred thirty-two million, seven hundred fifteen thousand, five hundred twenty".