172308485965 has 32 divisors (see below), whose sum is σ = 260897366016. Its totient is φ = 106118928960.

The previous prime is 172308485929. The next prime is 172308485971. The reversal of 172308485965 is 569584803271.

172308485965 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 172308485965 - 2²⁵ = 172274931533 is a prime.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 2664157 + ... + 2728066.

It is an arithmetic number, because the mean of its divisors is an integer number (8153042688).

It is a 1-persistent number, because it is pandigital, but 2⋅172308485965 = 344616971930 is not.

Almost surely, 2^172308485965 is an apocalyptic number.

It is an amenable number.

172308485965 is a deficient number, since it is larger than the sum of its proper divisors (88588880051).

172308485965 is a wasteful number, since it uses less digits than its factorization.

172308485965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5392329.

The product of its (nonzero) digits is 14515200, while the sum is 58.

The spelling of 172308485965 in words is "one hundred seventy-two billion, three hundred eight million, four hundred eighty-five thousand, nine hundred sixty-five".