172354240452 has 24 divisors (see below), whose sum is σ = 402210696832. Its totient is φ = 57444156000.

The previous prime is 172354240433. The next prime is 172354240469. The reversal of 172354240452 is 254042453271.

It is a self number, because there is not a number n which added to its sum of digits gives 172354240452.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 807799 + ... + 998622.

Almost surely, 2^172354240452 is an apocalyptic number.

172354240452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

172354240452 is an abundant number, since it is smaller than the sum of its proper divisors (229856456380).

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

172354240452 is a wasteful number, since it uses less digits than its factorization.

172354240452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1814379 (or 1814377 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 39.

The spelling of 172354240452 in words is "one hundred seventy-two billion, three hundred fifty-four million, two hundred forty thousand, four hundred fifty-two".