22536821165 has 8 divisors (see below), whose sum is σ = 27703799928. Its totient is φ = 17589713920.

The previous prime is 22536821159. The next prime is 22536821183. The reversal of 22536821165 is 56112863522.

It can be written as a sum of positive squares in 4 ways, for example, as 704690116 + 21832131049 = 26546^2 + 147757^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-22536821165 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 a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54967652 + ... + 54968061.

It is an arithmetic number, because the mean of its divisors is an integer number (3462974991).

Almost surely, 2^22536821165 is an apocalyptic number.

It is an amenable number.

22536821165 is a deficient number, since it is larger than the sum of its proper divisors (5166978763).

22536821165 is a wasteful number, since it uses less digits than its factorization.

22536821165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109935759.

The product of its digits is 172800, while the sum is 41.

The spelling of 22536821165 in words is "twenty-two billion, five hundred thirty-six million, eight hundred twenty-one thousand, one hundred sixty-five".