172366564870 has 24 divisors (see below), whose sum is σ = 320591066832. Its totient is φ = 66722537520.

The previous prime is 172366564847. The next prime is 172366564891. The reversal of 172366564870 is 78465663271.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8958474 + ... + 8977693.

It is an arithmetic number, because the mean of its divisors is an integer number (13357961118).

Almost surely, 2^172366564870 is an apocalyptic number.

172366564870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

172366564870 is a deficient number, since it is larger than the sum of its proper divisors (148224501962).

172366564870 is a wasteful number, since it uses less digits than its factorization.

172366564870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17936236 (or 17936205 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 55.

The spelling of 172366564870 in words is "one hundred seventy-two billion, three hundred sixty-six million, five hundred sixty-four thousand, eight hundred seventy".