22657731913 has 2 divisors, whose sum is σ = 22657731914. Its totient is φ = 22657731912.

The previous prime is 22657731911. The next prime is 22657731953. The reversal of 22657731913 is 31913775622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17263857664 + 5393874249 = 131392^2 + 73443^2 .

It is a cyclic number.

It is not a de Polignac number, because 22657731913 - 2¹ = 22657731911 is a prime.

Together with 22657731911, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (22657731911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11328865956 + 11328865957.

It is an arithmetic number, because the mean of its divisors is an integer number (11328865957).

Almost surely, 2^22657731913 is an apocalyptic number.

It is an amenable number.

22657731913 is a deficient number, since it is larger than the sum of its proper divisors (1).

22657731913 is an equidigital number, since it uses as much as digits as its factorization.

22657731913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 476280, while the sum is 46.

The spelling of 22657731913 in words is "twenty-two billion, six hundred fifty-seven million, seven hundred thirty-one thousand, nine hundred thirteen".