172447900691364 has 243 divisors, whose sum is σ = 466741327079937. Its totient is φ = 53680437340992.

The previous prime is 172447900691357. The next prime is 172447900691411. The reversal of 172447900691364 is 463196009744271.

The square root of 172447900691364 is 13131942.

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

172447900691364 is a `hidden beast` number, since 1 + 7 + 24 + 479 + 0 + 0 + 6 + 9 + 136 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 171203355180900 + 1244545510464 = 13084470^2 + 1115592^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 77924942722 + ... + 77924944934.

Almost surely, 2^{172447900691364} is an apocalyptic number.

172447900691364 is the 13131942-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172447900691364

172447900691364 is an abundant number, since it is smaller than the sum of its proper divisors (294293426388573).

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

172447900691364 is an equidigital number, since it uses as much as digits as its factorization.

172447900691364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4568 (or 2284 counting only the distinct ones).

The product of its (nonzero) digits is 54867456, while the sum is 63.

The spelling of 172447900691364 in words is "one hundred seventy-two trillion, four hundred forty-seven billion, nine hundred million, six hundred ninety-one thousand, three hundred sixty-four".