22641332657 has 2 divisors, whose sum is σ = 22641332658. Its totient is φ = 22641332656.

The previous prime is 22641332621. The next prime is 22641332669. The reversal of 22641332657 is 75623314622.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22548325921 + 93006736 = 150161^2 + 9644^2 .

It is a cyclic number.

It is not a de Polignac number, because 22641332657 - 2¹⁸ = 22641070513 is a prime.

It is not a weakly prime, because it can be changed into another prime (22641332057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11320666328 + 11320666329.

It is an arithmetic number, because the mean of its divisors is an integer number (11320666329).

Almost surely, 2^22641332657 is an apocalyptic number.

It is an amenable number.

22641332657 is a deficient number, since it is larger than the sum of its proper divisors (1).

22641332657 is an equidigital number, since it uses as much as digits as its factorization.

22641332657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 41.

The spelling of 22641332657 in words is "twenty-two billion, six hundred forty-one million, three hundred thirty-two thousand, six hundred fifty-seven".