172312447400 has 48 divisors (see below), whose sum is σ = 400665501600. Its totient is φ = 68918258880.

The previous prime is 172312447387. The next prime is 172312447427. The reversal of 172312447400 is 4744213271.

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, 2355779 + ... + 2427821.

It is an arithmetic number, because the mean of its divisors is an integer number (8347197950).

Almost surely, 2^172312447400 is an apocalyptic number.

172312447400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172312447400 is an abundant number, since it is smaller than the sum of its proper divisors (228353054200).

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

172312447400 is a wasteful number, since it uses less digits than its factorization.

172312447400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84018 (or 84009 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 35.

The spelling of 172312447400 in words is "one hundred seventy-two billion, three hundred twelve million, four hundred forty-seven thousand, four hundred".