23991272456 has 32 divisors (see below), whose sum is σ = 45106243200. Its totient is φ = 11962991040.

The previous prime is 23991272441. The next prime is 23991272477. The reversal of 23991272456 is 65427219932.

It is a happy number.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5164871 + ... + 5169513.

It is an arithmetic number, because the mean of its divisors is an integer number (1409570100).

Almost surely, 2^23991272456 is an apocalyptic number.

It is an amenable number.

23991272456 is a deficient number, since it is larger than the sum of its proper divisors (21114970744).

23991272456 is a wasteful number, since it uses less digits than its factorization.

23991272456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6269 (or 6265 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 50.

The spelling of 23991272456 in words is "twenty-three billion, nine hundred ninety-one million, two hundred seventy-two thousand, four hundred fifty-six".