172312709926320 has 60 divisors (see below), whose sum is σ = 578683517504976. Its totient is φ = 45950055980160.

The previous prime is 172312709926319. The next prime is 172312709926499. The reversal of 172312709926320 is 23629907213271.

172312709926320 is a `hidden beast` number, since 1 + 7 + 2 + 3 + 1 + 270 + 99 + 263 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

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, 119661603396 + ... + 119661604835.

Almost surely, 2^{172312709926320} is an apocalyptic number.

172312709926320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172312709926320 is an abundant number, since it is smaller than the sum of its proper divisors (406370807578656).

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

172312709926320 is a wasteful number, since it uses less digits than its factorization.

172312709926320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239323208250 (or 239323208241 counting only the distinct ones).

The product of its (nonzero) digits is 3429216, while the sum is 54.

The spelling of 172312709926320 in words is "one hundred seventy-two trillion, three hundred twelve billion, seven hundred nine million, nine hundred twenty-six thousand, three hundred twenty".