13115604991999 has 8 divisors (see below), whose sum is σ = 13273732669680. Its totient is φ = 12957479894016.

The previous prime is 13115604991981. The next prime is 13115604992011. The reversal of 13115604991999 is 99919940651131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13115604991999 - 2¹⁵ = 13115604959231 is a prime.

It is a super-2 number, since 2×13115604991999² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13115604991199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10802049 + ... + 11954725.

It is an arithmetic number, because the mean of its divisors is an integer number (1659216583710).

Almost surely, 2^{13115604991999} is an apocalyptic number.

13115604991999 is a deficient number, since it is larger than the sum of its proper divisors (158127677681).

13115604991999 is a wasteful number, since it uses less digits than its factorization.

13115604991999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289849.

The product of its (nonzero) digits is 21257640, while the sum is 67.

The spelling of 13115604991999 in words is "thirteen trillion, one hundred fifteen billion, six hundred four million, nine hundred ninety-one thousand, nine hundred ninety-nine".