22631551665 has 64 divisors (see below), whose sum is σ = 40189830912. Its totient is φ = 10825113600.

The previous prime is 22631551627. The next prime is 22631551721. The reversal of 22631551665 is 56615513622.

It is not a de Polignac number, because 22631551665 - 2⁸ = 22631551409 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 424395 + ... + 474735.

It is an arithmetic number, because the mean of its divisors is an integer number (627966108).

Almost surely, 2^22631551665 is an apocalyptic number.

It is an amenable number.

22631551665 is a deficient number, since it is larger than the sum of its proper divisors (17558279247).

22631551665 is a wasteful number, since it uses less digits than its factorization.

22631551665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50450.

The product of its digits is 324000, while the sum is 42.

The spelling of 22631551665 in words is "twenty-two billion, six hundred thirty-one million, five hundred fifty-one thousand, six hundred sixty-five".