172263573738 has 48 divisors (see below), whose sum is σ = 377283003552. Its totient is φ = 56799900000.

The previous prime is 172263573721. The next prime is 172263573791. The reversal of 172263573738 is 837375362271.

172263573738 is a `hidden beast` number, since 1 + 7 + 2 + 2 + 63 + 573 + 7 + 3 + 8 = 666.

172263573738 is digitally balanced in base 3, 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 23 ways as a sum of consecutive naturals, for example, 1940013 + ... + 2026863.

It is an arithmetic number, because the mean of its divisors is an integer number (7860062574).

Almost surely, 2^172263573738 is an apocalyptic number.

172263573738 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

172263573738 is an abundant number, since it is smaller than the sum of its proper divisors (205019429814).

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

172263573738 is a wasteful number, since it uses less digits than its factorization.

172263573738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88051 (or 88048 counting only the distinct ones).

The product of its digits is 8890560, while the sum is 54.

The spelling of 172263573738 in words is "one hundred seventy-two billion, two hundred sixty-three million, five hundred seventy-three thousand, seven hundred thirty-eight".