23979497040 has 80 divisors (see below), whose sum is σ = 82596052800. Its totient is φ = 6394531968.

The previous prime is 23979497011. The next prime is 23979497083. The reversal of 23979497040 is 4079497932.

It is a happy number.

23979497040 is a `hidden beast` number, since 23 + 97 + 9 + 497 + 0 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 5548650 + ... + 5552969.

It is an arithmetic number, because the mean of its divisors is an integer number (1032450660).

Almost surely, 2^23979497040 is an apocalyptic number.

23979497040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23979497040 is an abundant number, since it is smaller than the sum of its proper divisors (58616555760).

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

23979497040 is a wasteful number, since it uses less digits than its factorization.

23979497040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11101641 (or 11101629 counting only the distinct ones).

The product of its (nonzero) digits is 3429216, while the sum is 54.

The spelling of 23979497040 in words is "twenty-three billion, nine hundred seventy-nine million, four hundred ninety-seven thousand, forty".