23788764478 has 32 divisors (see below), whose sum is σ = 36455721120. Its totient is φ = 11639738880.

The previous prime is 23788764451. The next prime is 23788764487. The reversal of 23788764478 is 87446788732.

It is a super-2 number, since 2×23788764478² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16304113 + ... + 16305571.

It is an arithmetic number, because the mean of its divisors is an integer number (1139241285).

Almost surely, 2^23788764478 is an apocalyptic number.

23788764478 is a deficient number, since it is larger than the sum of its proper divisors (12666956642).

23788764478 is a wasteful number, since it uses less digits than its factorization.

23788764478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2332.

The product of its digits is 101154816, while the sum is 64.

The spelling of 23788764478 in words is "twenty-three billion, seven hundred eighty-eight million, seven hundred sixty-four thousand, four hundred seventy-eight".