12893697457 has 2 divisors, whose sum is σ = 12893697458. Its totient is φ = 12893697456.

The previous prime is 12893697451. The next prime is 12893697493. The reversal of 12893697457 is 75479639821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12850716321 + 42981136 = 113361^2 + 6556^2 .

It is a cyclic number.

It is not a de Polignac number, because 12893697457 - 2⁷ = 12893697329 is a prime.

It is a super-2 number, since 2×12893697457² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12893697395 and 12893697404.

It is not a weakly prime, because it can be changed into another prime (12893697451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6446848728 + 6446848729.

It is an arithmetic number, because the mean of its divisors is an integer number (6446848729).

Almost surely, 2^12893697457 is an apocalyptic number.

It is an amenable number.

12893697457 is a deficient number, since it is larger than the sum of its proper divisors (1).

12893697457 is an equidigital number, since it uses as much as digits as its factorization.

12893697457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22861440, while the sum is 61.

The spelling of 12893697457 in words is "twelve billion, eight hundred ninety-three million, six hundred ninety-seven thousand, four hundred fifty-seven".