13634461391 has 2 divisors, whose sum is σ = 13634461392. Its totient is φ = 13634461390.

The previous prime is 13634461369. The next prime is 13634461429. The reversal of 13634461391 is 19316443631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13634461391 - 2²⁶ = 13567352527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13634461691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6817230695 + 6817230696.

It is an arithmetic number, because the mean of its divisors is an integer number (6817230696).

Almost surely, 2^13634461391 is an apocalyptic number.

13634461391 is a deficient number, since it is larger than the sum of its proper divisors (1).

13634461391 is an equidigital number, since it uses as much as digits as its factorization.

13634461391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 41.

The spelling of 13634461391 in words is "thirteen billion, six hundred thirty-four million, four hundred sixty-one thousand, three hundred ninety-one".