172764884055 has 64 divisors (see below), whose sum is σ = 288703595520. Its totient is φ = 88112640000.

The previous prime is 172764884051. The next prime is 172764884057. The reversal of 172764884055 is 550488467271.

It is not a de Polignac number, because 172764884055 - 2² = 172764884051 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 172764883986 and 172764884004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172764884051) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 23183080 + ... + 23190530.

It is an arithmetic number, because the mean of its divisors is an integer number (4510993680).

Almost surely, 2^172764884055 is an apocalyptic number.

172764884055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

172764884055 is a deficient number, since it is larger than the sum of its proper divisors (115938711465).

172764884055 is a wasteful number, since it uses less digits than its factorization.

172764884055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7992.

The product of its (nonzero) digits is 15052800, while the sum is 57.

The spelling of 172764884055 in words is "one hundred seventy-two billion, seven hundred sixty-four million, eight hundred eighty-four thousand, fifty-five".