172371252426 has 32 divisors (see below), whose sum is σ = 354169603968. Its totient is φ = 55886863680.

The previous prime is 172371252413. The next prime is 172371252451. The reversal of 172371252426 is 624252173271.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 607476 + ... + 844848.

It is an arithmetic number, because the mean of its divisors is an integer number (11067800124).

Almost surely, 2^172371252426 is an apocalyptic number.

172371252426 is an abundant number, since it is smaller than the sum of its proper divisors (181798351542).

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

172371252426 is a wasteful number, since it uses less digits than its factorization.

172371252426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240686.

The product of its digits is 282240, while the sum is 42.

The spelling of 172371252426 in words is "one hundred seventy-two billion, three hundred seventy-one million, two hundred fifty-two thousand, four hundred twenty-six".