22608265681 has 2 divisors, whose sum is σ = 22608265682. Its totient is φ = 22608265680.

The previous prime is 22608265649. The next prime is 22608265751. The reversal of 22608265681 is 18656280622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17877027025 + 4731238656 = 133705^2 + 68784^2 .

It is a cyclic number.

It is not a de Polignac number, because 22608265681 - 2⁵ = 22608265649 is a prime.

It is a super-2 number, since 2×22608265681² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22608265601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11304132840 + 11304132841.

It is an arithmetic number, because the mean of its divisors is an integer number (11304132841).

Almost surely, 2^22608265681 is an apocalyptic number.

It is an amenable number.

22608265681 is a deficient number, since it is larger than the sum of its proper divisors (1).

22608265681 is an equidigital number, since it uses as much as digits as its factorization.

22608265681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 552960, while the sum is 46.

The spelling of 22608265681 in words is "twenty-two billion, six hundred eight million, two hundred sixty-five thousand, six hundred eighty-one".