129512376320 has 48 divisors (see below), whose sum is σ = 310753841580. Its totient is φ = 51804946432.

The previous prime is 129512376317. The next prime is 129512376337. The reversal of 129512376320 is 23673215921.

It can be written as a sum of positive squares in 2 ways, for example, as 110990255104 + 18522121216 = 333152^2 + 136096^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6313607 + ... + 6334086.

Almost surely, 2^129512376320 is an apocalyptic number.

129512376320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129512376320 is an abundant number, since it is smaller than the sum of its proper divisors (181241465260).

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

129512376320 is an equidigital number, since it uses as much as digits as its factorization.

129512376320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12647720 (or 12647700 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 41.

The spelling of 129512376320 in words is "one hundred twenty-nine billion, five hundred twelve million, three hundred seventy-six thousand, three hundred twenty".