172964320878 has 8 divisors (see below), whose sum is σ = 345928641768. Its totient is φ = 57654773624.

The previous prime is 172964320861. The next prime is 172964320933. The reversal of 172964320878 is 878023469271.

It is a sphenic number, since it is the product of 3 distinct primes.

172964320878 is an admirable number.

It is a congruent 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, 14413693401 + ... + 14413693412.

It is an arithmetic number, because the mean of its divisors is an integer number (43241080221).

Almost surely, 2^172964320878 is an apocalyptic number.

172964320878 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

172964320878 is a wasteful number, since it uses less digits than its factorization.

172964320878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28827386818.

The product of its (nonzero) digits is 8128512, while the sum is 57.

The spelling of 172964320878 in words is "one hundred seventy-two billion, nine hundred sixty-four million, three hundred twenty thousand, eight hundred seventy-eight".