172479198966 has 16 divisors (see below), whose sum is σ = 352980686784. Its totient is φ = 56156018184.

The previous prime is 172479198959. The next prime is 172479198989. The reversal of 172479198966 is 669891974271.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 172479198966.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 334261756 + ... + 334262271.

It is an arithmetic number, because the mean of its divisors is an integer number (22061292924).

Almost surely, 2^172479198966 is an apocalyptic number.

172479198966 is an abundant number, since it is smaller than the sum of its proper divisors (180501487818).

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

172479198966 is a wasteful number, since it uses less digits than its factorization.

172479198966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668524075.

The product of its digits is 82301184, while the sum is 69.

The spelling of 172479198966 in words is "one hundred seventy-two billion, four hundred seventy-nine million, one hundred ninety-eight thousand, nine hundred sixty-six".