23979496551 has 16 divisors (see below), whose sum is σ = 32408570880. Its totient is φ = 15768980480.

The previous prime is 23979496507. The next prime is 23979496571. The reversal of 23979496551 is 15569497932.

It is a cyclic number.

It is not a de Polignac number, because 23979496551 - 2¹⁷ = 23979365479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23979496571) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84490 + ... + 234728.

It is an arithmetic number, because the mean of its divisors is an integer number (2025535680).

Almost surely, 2^23979496551 is an apocalyptic number.

23979496551 is a deficient number, since it is larger than the sum of its proper divisors (8429074329).

23979496551 is a wasteful number, since it uses less digits than its factorization.

23979496551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150966.

The product of its digits is 18370800, while the sum is 60.

The spelling of 23979496551 in words is "twenty-three billion, nine hundred seventy-nine million, four hundred ninety-six thousand, five hundred fifty-one".