172214992692 has 36 divisors (see below), whose sum is σ = 439173642180. Its totient is φ = 56896987392.

The previous prime is 172214992687. The next prime is 172214992709. The reversal of 172214992692 is 296299412271.

It is a happy number.

172214992692 is a `hidden beast` number, since 1 + 72 + 21 + 499 + 2 + 69 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 93907925136 + 78307067556 = 306444^2 + 279834^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×172214992692² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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, 21162967 + ... + 21171102.

Almost surely, 2^172214992692 is an apocalyptic number.

172214992692 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

172214992692 is an abundant number, since it is smaller than the sum of its proper divisors (266958649488).

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

172214992692 is a wasteful number, since it uses less digits than its factorization.

172214992692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42334192 (or 42334187 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 54.

The spelling of 172214992692 in words is "one hundred seventy-two billion, two hundred fourteen million, nine hundred ninety-two thousand, six hundred ninety-two".