13415399149 has 2 divisors, whose sum is σ = 13415399150. Its totient is φ = 13415399148.

The previous prime is 13415399147. The next prime is 13415399171. The reversal of 13415399149 is 94199351431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12894738025 + 520661124 = 113555^2 + 22818^2 .

It is a cyclic number.

It is not a de Polignac number, because 13415399149 - 2¹ = 13415399147 is a prime.

Together with 13415399147, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13415399147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6707699574 + 6707699575.

It is an arithmetic number, because the mean of its divisors is an integer number (6707699575).

Almost surely, 2^13415399149 is an apocalyptic number.

It is an amenable number.

13415399149 is a deficient number, since it is larger than the sum of its proper divisors (1).

13415399149 is an equidigital number, since it uses as much as digits as its factorization.

13415399149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 524880, while the sum is 49.

The spelling of 13415399149 in words is "thirteen billion, four hundred fifteen million, three hundred ninety-nine thousand, one hundred forty-nine".