13168020913 has 2 divisors, whose sum is σ = 13168020914. Its totient is φ = 13168020912.

The previous prime is 13168020839. The next prime is 13168020919. The reversal of 13168020913 is 31902086131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7696903824 + 5471117089 = 87732^2 + 73967^2 .

It is a cyclic number.

It is not a de Polignac number, because 13168020913 - 2²⁹ = 12631150001 is a prime.

It is not a weakly prime, because it can be changed into another prime (13168020919) 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, 6584010456 + 6584010457.

It is an arithmetic number, because the mean of its divisors is an integer number (6584010457).

Almost surely, 2^13168020913 is an apocalyptic number.

It is an amenable number.

13168020913 is a deficient number, since it is larger than the sum of its proper divisors (1).

13168020913 is an equidigital number, since it uses as much as digits as its factorization.

13168020913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 34.

The spelling of 13168020913 in words is "thirteen billion, one hundred sixty-eight million, twenty thousand, nine hundred thirteen".