172156468773 has 16 divisors (see below), whose sum is σ = 233320995072. Its totient is φ = 112881720000.

The previous prime is 172156468733. The next prime is 172156468937. The reversal of 172156468773 is 377864651271.

It is not a de Polignac number, because 172156468773 - 2²⁰ = 172155420197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172156468733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4010323 + ... + 4053023.

It is an arithmetic number, because the mean of its divisors is an integer number (14582562192).

Almost surely, 2^172156468773 is an apocalyptic number.

It is an amenable number.

172156468773 is a deficient number, since it is larger than the sum of its proper divisors (61164526299).

172156468773 is a wasteful number, since it uses less digits than its factorization.

172156468773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64796.

The product of its digits is 11854080, while the sum is 57.

The spelling of 172156468773 in words is "one hundred seventy-two billion, one hundred fifty-six million, four hundred sixty-eight thousand, seven hundred seventy-three".