13713185657 has 2 divisors, whose sum is σ = 13713185658. Its totient is φ = 13713185656.

The previous prime is 13713185639. The next prime is 13713185669. The reversal of 13713185657 is 75658131731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13615155856 + 98029801 = 116684^2 + 9901^2 .

It is a cyclic number.

It is not a de Polignac number, because 13713185657 - 2¹² = 13713181561 is a prime.

It is not a weakly prime, because it can be changed into another prime (13713185627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6856592828 + 6856592829.

It is an arithmetic number, because the mean of its divisors is an integer number (6856592829).

Almost surely, 2^13713185657 is an apocalyptic number.

It is an amenable number.

13713185657 is a deficient number, since it is larger than the sum of its proper divisors (1).

13713185657 is an equidigital number, since it uses as much as digits as its factorization.

13713185657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 529200, while the sum is 47.

The spelling of 13713185657 in words is "thirteen billion, seven hundred thirteen million, one hundred eighty-five thousand, six hundred fifty-seven".