22247955857 has 2 divisors, whose sum is σ = 22247955858. Its totient is φ = 22247955856.

The previous prime is 22247955809. The next prime is 22247955869. The reversal of 22247955857 is 75855974222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11586154321 + 10661801536 = 107639^2 + 103256^2 .

It is a cyclic number.

It is not a de Polignac number, because 22247955857 - 2²⁸ = 21979520401 is a prime.

It is not a weakly prime, because it can be changed into another prime (22247945857) 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, 11123977928 + 11123977929.

It is an arithmetic number, because the mean of its divisors is an integer number (11123977929).

Almost surely, 2^22247955857 is an apocalyptic number.

It is an amenable number.

22247955857 is a deficient number, since it is larger than the sum of its proper divisors (1).

22247955857 is an equidigital number, since it uses as much as digits as its factorization.

22247955857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14112000, while the sum is 56.

The spelling of 22247955857 in words is "twenty-two billion, two hundred forty-seven million, nine hundred fifty-five thousand, eight hundred fifty-seven".