136397904913 has 2 divisors, whose sum is σ = 136397904914. Its totient is φ = 136397904912.

The previous prime is 136397904869. The next prime is 136397904947. The reversal of 136397904913 is 319409793631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75483716049 + 60914188864 = 274743^2 + 246808^2 .

It is a cyclic number.

It is not a de Polignac number, because 136397904913 - 2³³ = 127807970321 is a prime.

It is not a weakly prime, because it can be changed into another prime (136397904983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68198952456 + 68198952457.

It is an arithmetic number, because the mean of its divisors is an integer number (68198952457).

Almost surely, 2^136397904913 is an apocalyptic number.

It is an amenable number.

136397904913 is a deficient number, since it is larger than the sum of its proper divisors (1).

136397904913 is an equidigital number, since it uses as much as digits as its factorization.

136397904913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3306744, while the sum is 55.

The spelling of 136397904913 in words is "one hundred thirty-six billion, three hundred ninety-seven million, nine hundred four thousand, nine hundred thirteen".