22115607665 has 16 divisors (see below), whose sum is σ = 27214258176. Its totient is φ = 17243030400.

The previous prime is 22115607659. The next prime is 22115607667. The reversal of 22115607665 is 56670651122.

It is not a de Polignac number, because 22115607665 - 2³⁴ = 4935738481 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22115607667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143504 + ... + 254606.

It is an arithmetic number, because the mean of its divisors is an integer number (1700891136).

Almost surely, 2^22115607665 is an apocalyptic number.

It is an amenable number.

22115607665 is a deficient number, since it is larger than the sum of its proper divisors (5098650511).

22115607665 is a wasteful number, since it uses less digits than its factorization.

22115607665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112120.

The product of its (nonzero) digits is 151200, while the sum is 41.

The spelling of 22115607665 in words is "twenty-two billion, one hundred fifteen million, six hundred seven thousand, six hundred sixty-five".