22977578681 has 2 divisors, whose sum is σ = 22977578682. Its totient is φ = 22977578680.

The previous prime is 22977578639. The next prime is 22977578719. The reversal of 22977578681 is 18687577922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22366698025 + 610880656 = 149555^2 + 24716^2 .

It is a cyclic number.

It is not a de Polignac number, because 22977578681 - 2²⁶ = 22910469817 is a prime.

It is a super-2 number, since 2×22977578681² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22977575681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11488789340 + 11488789341.

It is an arithmetic number, because the mean of its divisors is an integer number (11488789341).

Almost surely, 2^22977578681 is an apocalyptic number.

It is an amenable number.

22977578681 is a deficient number, since it is larger than the sum of its proper divisors (1).

22977578681 is an equidigital number, since it uses as much as digits as its factorization.

22977578681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23708160, while the sum is 62.

The spelling of 22977578681 in words is "twenty-two billion, nine hundred seventy-seven million, five hundred seventy-eight thousand, six hundred eighty-one".