23164778472 has 32 divisors (see below), whose sum is σ = 63176669280. Its totient is φ = 7019629760.

The previous prime is 23164778471. The next prime is 23164778599. The reversal of 23164778472 is 27487746132.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (23164778471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43872423 + ... + 43872950.

It is an arithmetic number, because the mean of its divisors is an integer number (1974270915).

Almost surely, 2^23164778472 is an apocalyptic number.

23164778472 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

23164778472 is an abundant number, since it is smaller than the sum of its proper divisors (40011890808).

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

23164778472 is a wasteful number, since it uses less digits than its factorization.

23164778472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87745393 (or 87745389 counting only the distinct ones).

The product of its digits is 3161088, while the sum is 51.

The spelling of 23164778472 in words is "twenty-three billion, one hundred sixty-four million, seven hundred seventy-eight thousand, four hundred seventy-two".