172499011172 has 12 divisors (see below), whose sum is σ = 307568991996. Its totient is φ = 84622156320.

The previous prime is 172499011171. The next prime is 172499011177. The reversal of 172499011172 is 271110994271.

It can be written as a sum of positive squares in 2 ways, for example, as 111812659456 + 60686351716 = 334384^2 + 246346^2 .

It is not an unprimeable number, because it can be changed into a prime (172499011171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 406837079 + ... + 406837502.

It is an arithmetic number, because the mean of its divisors is an integer number (25630749333).

Almost surely, 2^172499011172 is an apocalyptic number.

It is an amenable number.

172499011172 is a deficient number, since it is larger than the sum of its proper divisors (135069980824).

172499011172 is a wasteful number, since it uses less digits than its factorization.

172499011172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813674638 (or 813674636 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 44.

The spelling of 172499011172 in words is "one hundred seventy-two billion, four hundred ninety-nine million, eleven thousand, one hundred seventy-two".