22137648457 has 2 divisors, whose sum is σ = 22137648458. Its totient is φ = 22137648456.

The previous prime is 22137648443. The next prime is 22137648461. The reversal of 22137648457 is 75484673122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11551090576 + 10586557881 = 107476^2 + 102891^2 .

It is a cyclic number.

It is not a de Polignac number, because 22137648457 - 2¹¹ = 22137646409 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22137648457.

It is not a weakly prime, because it can be changed into another prime (22137648437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11068824228 + 11068824229.

It is an arithmetic number, because the mean of its divisors is an integer number (11068824229).

Almost surely, 2^22137648457 is an apocalyptic number.

It is an amenable number.

22137648457 is a deficient number, since it is larger than the sum of its proper divisors (1).

22137648457 is an equidigital number, since it uses as much as digits as its factorization.

22137648457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2257920, while the sum is 49.

The spelling of 22137648457 in words is "twenty-two billion, one hundred thirty-seven million, six hundred forty-eight thousand, four hundred fifty-seven".