13516815839994 has 12 divisors (see below), whose sum is σ = 29286434320026. Its totient is φ = 4505605279992.

The previous prime is 13516815839959. The next prime is 13516815840041. The reversal of 13516815839994 is 49993851861531.

13516815839994 is a `hidden beast` number, since 1 + 3 + 516 + 8 + 15 + 8 + 3 + 9 + 9 + 94 = 666.

It can be written as a sum of positive squares in only one way, i.e., 7463075450769 + 6053740389225 = 2731863^2 + 2460435^2 .

It is a super-4 number, since 4×13516815839994⁴ (a number of 54 digits) contains 4444 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 375467106649 + ... + 375467106684.

Almost surely, 2^{13516815839994} is an apocalyptic number.

13516815839994 is an abundant number, since it is smaller than the sum of its proper divisors (15769618480032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13516815839994 is a wasteful number, since it uses less digits than its factorization.

13516815839994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750934213341 (or 750934213338 counting only the distinct ones).

The product of its digits is 251942400, while the sum is 72.

The spelling of 13516815839994 in words is "thirteen trillion, five hundred sixteen billion, eight hundred fifteen million, eight hundred thirty-nine thousand, nine hundred ninety-four".