22604640621 has 8 divisors (see below), whose sum is σ = 30954102624. Its totient is φ = 14662469520.

The previous prime is 22604640607. The next prime is 22604640661. The reversal of 22604640621 is 12604640622.

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

It is not a de Polignac number, because 22604640621 - 2¹⁰ = 22604639597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22604640601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101822595 + ... + 101822816.

It is an arithmetic number, because the mean of its divisors is an integer number (3869262828).

Almost surely, 2^22604640621 is an apocalyptic number.

It is an amenable number.

22604640621 is a deficient number, since it is larger than the sum of its proper divisors (8349462003).

22604640621 is a wasteful number, since it uses less digits than its factorization.

22604640621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203645451.

The product of its (nonzero) digits is 27648, while the sum is 33.

Subtracting from 22604640621 its reverse (12604640622), we obtain a palindrome (9999999999).

The spelling of 22604640621 in words is "twenty-two billion, six hundred four million, six hundred forty thousand, six hundred twenty-one".