172661535423400 has 48 divisors (see below), whose sum is σ = 401443152645600. Its totient is φ = 69063739711680.

The previous prime is 172661535423389. The next prime is 172661535423413. The reversal of 172661535423400 is 4324535166271.

172661535423400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 10486219 + ... + 21337381.

It is an arithmetic number, because the mean of its divisors is an integer number (8363399013450).

Almost surely, 2^{172661535423400} is an apocalyptic number.

172661535423400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172661535423400 is an abundant number, since it is smaller than the sum of its proper divisors (228781617222200).

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

172661535423400 is a wasteful number, since it uses less digits than its factorization.

172661535423400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10930738 (or 10930729 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 49.

The spelling of 172661535423400 in words is "one hundred seventy-two trillion, six hundred sixty-one billion, five hundred thirty-five million, four hundred twenty-three thousand, four hundred".