22656652661 has 2 divisors, whose sum is σ = 22656652662. Its totient is φ = 22656652660.

The previous prime is 22656652649. The next prime is 22656652679. The reversal of 22656652661 is 16625665622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22258849636 + 397803025 = 149194^2 + 19945^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22656652661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22656642661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11328326330 + 11328326331.

It is an arithmetic number, because the mean of its divisors is an integer number (11328326331).

Almost surely, 2^22656652661 is an apocalyptic number.

It is an amenable number.

22656652661 is a deficient number, since it is larger than the sum of its proper divisors (1).

22656652661 is an equidigital number, since it uses as much as digits as its factorization.

22656652661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1555200, while the sum is 47.

The spelling of 22656652661 in words is "twenty-two billion, six hundred fifty-six million, six hundred fifty-two thousand, six hundred sixty-one".