23908415823 has 12 divisors (see below), whose sum is σ = 35100516568. Its totient is φ = 15677649360.

The previous prime is 23908415819. The next prime is 23908415831. The reversal of 23908415823 is 32851480932.

23908415823 is a `hidden beast` number, since 23 + 9 + 0 + 8 + 41 + 582 + 3 = 666.

It is not a de Polignac number, because 23908415823 - 2² = 23908415819 is a prime.

It is a super-2 number, since 2×23908415823² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23908415803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21773965 + ... + 21775062.

Almost surely, 2^23908415823 is an apocalyptic number.

23908415823 is a deficient number, since it is larger than the sum of its proper divisors (11192100745).

23908415823 is a wasteful number, since it uses less digits than its factorization.

23908415823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43549094 (or 43549091 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 23908415823 in words is "twenty-three billion, nine hundred eight million, four hundred fifteen thousand, eight hundred twenty-three".