23979721975 has 12 divisors (see below), whose sum is σ = 32438024280. Its totient is φ = 17439797600.

The previous prime is 23979721937. The next prime is 23979722021. The reversal of 23979721975 is 57912797932.

It is not a de Polignac number, because 23979721975 - 2⁷ = 23979721847 is a prime.

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 11 ways as a sum of consecutive naturals, for example, 43599220 + ... + 43599769.

It is an arithmetic number, because the mean of its divisors is an integer number (2703168690).

Almost surely, 2^23979721975 is an apocalyptic number.

23979721975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

23979721975 is a deficient number, since it is larger than the sum of its proper divisors (8458302305).

23979721975 is a wasteful number, since it uses less digits than its factorization.

23979721975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87199010 (or 87199005 counting only the distinct ones).

The product of its digits is 15002820, while the sum is 61.

The spelling of 23979721975 in words is "twenty-three billion, nine hundred seventy-nine million, seven hundred twenty-one thousand, nine hundred seventy-five".