22777607081 has 2 divisors, whose sum is σ = 22777607082. Its totient is φ = 22777607080.

The previous prime is 22777607077. The next prime is 22777607117. The reversal of 22777607081 is 18070677722.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20769133225 + 2008473856 = 144115^2 + 44816^2 .

It is a cyclic number.

It is not a de Polignac number, because 22777607081 - 2² = 22777607077 is a prime.

It is a super-2 number, since 2×22777607081² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22777601081) 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 as a sum of consecutive naturals, namely, 11388803540 + 11388803541.

It is an arithmetic number, because the mean of its divisors is an integer number (11388803541).

Almost surely, 2^22777607081 is an apocalyptic number.

It is an amenable number.

22777607081 is a deficient number, since it is larger than the sum of its proper divisors (1).

22777607081 is an equidigital number, since it uses as much as digits as its factorization.

22777607081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 460992, while the sum is 47.

The spelling of 22777607081 in words is "twenty-two billion, seven hundred seventy-seven million, six hundred seven thousand, eighty-one".