23742424557 has 12 divisors (see below), whose sum is σ = 34305791520. Its totient is φ = 15823123848.

The previous prime is 23742424549. The next prime is 23742424561. The reversal of 23742424557 is 75542424732.

23742424557 is a `hidden beast` number, since 2 + 3 + 74 + 2 + 4 + 24 + 557 = 666.

It is not a de Polignac number, because 23742424557 - 2³ = 23742424549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23742424547) 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, 400683 + ... + 456104.

It is an arithmetic number, because the mean of its divisors is an integer number (2858815960).

Almost surely, 2^23742424557 is an apocalyptic number.

It is an amenable number.

23742424557 is a deficient number, since it is larger than the sum of its proper divisors (10563366963).

23742424557 is a wasteful number, since it uses less digits than its factorization.

23742424557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859872 (or 859869 counting only the distinct ones).

The product of its digits is 1881600, while the sum is 45.

The spelling of 23742424557 in words is "twenty-three billion, seven hundred forty-two million, four hundred twenty-four thousand, five hundred fifty-seven".