22364766521 has 4 divisors (see below), whose sum is σ = 22365577344. Its totient is φ = 22363955700.

The previous prime is 22364766509. The next prime is 22364766553. The reversal of 22364766521 is 12566746322.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22364766521 - 2³⁰ = 21291024697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22364762521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 362525 + ... + 419706.

It is an arithmetic number, because the mean of its divisors is an integer number (5591394336).

Almost surely, 2^22364766521 is an apocalyptic number.

It is an amenable number.

22364766521 is a deficient number, since it is larger than the sum of its proper divisors (810823).

22364766521 is an equidigital number, since it uses as much as digits as its factorization.

22364766521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810822.

The product of its digits is 725760, while the sum is 44.

The spelling of 22364766521 in words is "twenty-two billion, three hundred sixty-four million, seven hundred sixty-six thousand, five hundred twenty-one".