23172208398 has 12 divisors (see below), whose sum is σ = 50206451568. Its totient is φ = 7724069460.

The previous prime is 23172208379. The next prime is 23172208403. The reversal of 23172208398 is 89380227132.

23172208398 is a `hidden beast` number, since 2 + 31 + 7 + 220 + 8 + 398 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent 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 5 ways as a sum of consecutive naturals, for example, 643672438 + ... + 643672473.

It is an arithmetic number, because the mean of its divisors is an integer number (4183870964).

Almost surely, 2^23172208398 is an apocalyptic number.

23172208398 is an abundant number, since it is smaller than the sum of its proper divisors (27034243170).

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

23172208398 is a wasteful number, since it uses less digits than its factorization.

23172208398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1287344919 (or 1287344916 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 23172208398 in words is "twenty-three billion, one hundred seventy-two million, two hundred eight thousand, three hundred ninety-eight".