172195121296 has 45 divisors (see below), whose sum is σ = 366754014739. Its totient is φ = 78262210400.

The previous prime is 172195121257. The next prime is 172195121321. The reversal of 172195121296 is 692121591271.

The square root of 172195121296 is 414964.

It is a perfect power (a square), and thus also a powerful number.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 18253701 + ... + 18263131.

Almost surely, 2^172195121296 is an apocalyptic number.

172195121296 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

172195121296 is the 414964-th square number.

It is an amenable number.

172195121296 is an abundant number, since it is smaller than the sum of its proper divisors (194558893443).

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

172195121296 is an frugal number, since it uses more digits than its factorization.

172195121296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18892 (or 9444 counting only the distinct ones).

The product of its digits is 136080, while the sum is 46.

The spelling of 172195121296 in words is "one hundred seventy-two billion, one hundred ninety-five million, one hundred twenty-one thousand, two hundred ninety-six".