23686906665 has 32 divisors (see below), whose sum is σ = 39240806400. Its totient is φ = 12186540800.

The previous prime is 23686906637. The next prime is 23686906703. The reversal of 23686906665 is 56660968632.

It is not a de Polignac number, because 23686906665 - 2¹⁴ = 23686890281 is a prime.

It is a super-2 number, since 2×23686906665² (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 31 ways as a sum of consecutive naturals, for example, 477031 + ... + 524339.

It is an arithmetic number, because the mean of its divisors is an integer number (1226275200).

Almost surely, 2^23686906665 is an apocalyptic number.

It is an amenable number.

23686906665 is a deficient number, since it is larger than the sum of its proper divisors (15553899735).

23686906665 is a wasteful number, since it uses less digits than its factorization.

23686906665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48497.

The product of its (nonzero) digits is 16796160, while the sum is 57.

The spelling of 23686906665 in words is "twenty-three billion, six hundred eighty-six million, nine hundred six thousand, six hundred sixty-five".