172809883444620 has 96 divisors (see below), whose sum is σ = 484780083088896. Its totient is φ = 45995818176000.

The previous prime is 172809883444613. The next prime is 172809883444643. The reversal of 172809883444620 is 26444388908271.

It is a super-2 number, since 2×172809883444620² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69074595 + ... + 71532645.

It is an arithmetic number, because the mean of its divisors is an integer number (5049792532176).

Almost surely, 2^{172809883444620} is an apocalyptic number.

172809883444620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172809883444620 is an abundant number, since it is smaller than the sum of its proper divisors (311970199644276).

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

172809883444620 is a wasteful number, since it uses less digits than its factorization.

172809883444620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2460271 (or 2460269 counting only the distinct ones).

The product of its (nonzero) digits is 148635648, while the sum is 66.

The spelling of 172809883444620 in words is "one hundred seventy-two trillion, eight hundred nine billion, eight hundred eighty-three million, four hundred forty-four thousand, six hundred twenty".