172355921260 has 12 divisors (see below), whose sum is σ = 361947434688. Its totient is φ = 68942368496.

The previous prime is 172355921219. The next prime is 172355921293. The reversal of 172355921260 is 62129553271.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4308898012 + ... + 4308898051.

It is an arithmetic number, because the mean of its divisors is an integer number (30162286224).

Almost surely, 2^172355921260 is an apocalyptic number.

172355921260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172355921260 is an abundant number, since it is smaller than the sum of its proper divisors (189591513428).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

172355921260 is a wasteful number, since it uses less digits than its factorization.

172355921260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8617796072 (or 8617796070 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 43.

The spelling of 172355921260 in words is "one hundred seventy-two billion, three hundred fifty-five million, nine hundred twenty-one thousand, two hundred sixty".