13400134991 has 2 divisors, whose sum is σ = 13400134992. Its totient is φ = 13400134990.

The previous prime is 13400134987. The next prime is 13400135027. The reversal of 13400134991 is 19943100431.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13400134991 - 2² = 13400134987 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13400134291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6700067495 + 6700067496.

It is an arithmetic number, because the mean of its divisors is an integer number (6700067496).

Almost surely, 2^13400134991 is an apocalyptic number.

13400134991 is a deficient number, since it is larger than the sum of its proper divisors (1).

13400134991 is an equidigital number, since it uses as much as digits as its factorization.

13400134991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 35.

The spelling of 13400134991 in words is "thirteen billion, four hundred million, one hundred thirty-four thousand, nine hundred ninety-one".