23661570715 has 16 divisors (see below), whose sum is σ = 28676918880. Its totient is φ = 18741300480.

The previous prime is 23661570701. The next prime is 23661570727. The reversal of 23661570715 is 51707516632.

It is not a de Polignac number, because 23661570715 - 2²⁷ = 23527352987 is a prime.

It is a super-2 number, since 2×23661570715² (a number of 22 digits) contains 22 as substring.

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, 214045 + ... + 305185.

It is an arithmetic number, because the mean of its divisors is an integer number (1792307430).

Almost surely, 2^23661570715 is an apocalyptic number.

23661570715 is a deficient number, since it is larger than the sum of its proper divisors (5015348165).

23661570715 is a wasteful number, since it uses less digits than its factorization.

23661570715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91662.

The product of its (nonzero) digits is 264600, while the sum is 43.

The spelling of 23661570715 in words is "twenty-three billion, six hundred sixty-one million, five hundred seventy thousand, seven hundred fifteen".