23451570513 has 24 divisors (see below), whose sum is σ = 38767622400. Its totient is φ = 13382233344.

The previous prime is 23451570491. The next prime is 23451570521. The reversal of 23451570513 is 31507515432.

23451570513 is a `hidden beast` number, since 2 + 34 + 5 + 1 + 570 + 51 + 3 = 666.

It is not a de Polignac number, because 23451570513 - 2⁶ = 23451570449 is a prime.

It is a super-2 number, since 2×23451570513² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23451570913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 213568 + ... + 304161.

It is an arithmetic number, because the mean of its divisors is an integer number (1615317600).

Almost surely, 2^23451570513 is an apocalyptic number.

It is an amenable number.

23451570513 is a deficient number, since it is larger than the sum of its proper divisors (15316051887).

23451570513 is a wasteful number, since it uses less digits than its factorization.

23451570513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518461 (or 518458 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 36.

The spelling of 23451570513 in words is "twenty-three billion, four hundred fifty-one million, five hundred seventy thousand, five hundred thirteen".