172716520137 has 64 divisors (see below), whose sum is σ = 281534939136. Its totient is φ = 92038605120.

The previous prime is 172716520129. The next prime is 172716520147. The reversal of 172716520137 is 731025617271.

172716520137 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 172716520137 - 2³ = 172716520129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (172716520147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11685562 + ... + 11700332.

It is an arithmetic number, because the mean of its divisors is an integer number (4398983424).

Almost surely, 2^172716520137 is an apocalyptic number.

It is an amenable number.

172716520137 is a deficient number, since it is larger than the sum of its proper divisors (108818418999).

172716520137 is a wasteful number, since it uses less digits than its factorization.

172716520137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15410.

The product of its (nonzero) digits is 123480, while the sum is 42.

The spelling of 172716520137 in words is "one hundred seventy-two billion, seven hundred sixteen million, five hundred twenty thousand, one hundred thirty-seven".