172515220275 has 24 divisors (see below), whose sum is σ = 285293579824. Its totient is φ = 91986048000.

The previous prime is 172515220249. The next prime is 172515220291. The reversal of 172515220275 is 572022515271.

172515220275 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 172515220275 - 2²⁰ = 172514171699 is a prime.

It is a Duffinian 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 23 ways as a sum of consecutive naturals, for example, 41307 + ... + 588843.

Almost surely, 2^172515220275 is an apocalyptic number.

172515220275 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

172515220275 is a deficient number, since it is larger than the sum of its proper divisors (112778359549).

172515220275 is a wasteful number, since it uses less digits than its factorization.

172515220275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551751 (or 551746 counting only the distinct ones).

The product of its (nonzero) digits is 98000, while the sum is 39.

The spelling of 172515220275 in words is "one hundred seventy-two billion, five hundred fifteen million, two hundred twenty thousand, two hundred seventy-five".