22521641365 has 32 divisors (see below), whose sum is σ = 27791112960. Its totient is φ = 17515190784.

The previous prime is 22521641341. The next prime is 22521641369. The reversal of 22521641365 is 56314612522.

It is a cyclic number.

It is not a de Polignac number, because 22521641365 - 2⁷ = 22521641237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22521641369) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10790352 + ... + 10792438.

It is an arithmetic number, because the mean of its divisors is an integer number (868472280).

Almost surely, 2^22521641365 is an apocalyptic number.

It is an amenable number.

22521641365 is a deficient number, since it is larger than the sum of its proper divisors (5269471595).

22521641365 is a wasteful number, since it uses less digits than its factorization.

22521641365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2541.

The product of its digits is 86400, while the sum is 37.

The spelling of 22521641365 in words is "twenty-two billion, five hundred twenty-one million, six hundred forty-one thousand, three hundred sixty-five".