16813766313 has 6 divisors (see below), whose sum is σ = 24286551354. Its totient is φ = 11209177536.

The previous prime is 16813766297. The next prime is 16813766317. The reversal of 16813766313 is 31366731861.

16813766313 is a `hidden beast` number, since 1 + 6 + 8 + 1 + 3 + 7 + 6 + 631 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 13154484249 + 3659282064 = 114693^2 + 60492^2 .

It is not a de Polignac number, because 16813766313 - 2⁴ = 16813766297 is a prime.

It is a super-2 number, since 2×16813766313² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16813766317) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 934098120 + ... + 934098137.

It is an arithmetic number, because the mean of its divisors is an integer number (4047758559).

Almost surely, 2^16813766313 is an apocalyptic number.

It is an amenable number.

16813766313 is a deficient number, since it is larger than the sum of its proper divisors (7472785041).

16813766313 is a wasteful number, since it uses less digits than its factorization.

16813766313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1868196263 (or 1868196260 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

It can be divided in two parts, 16813 and 766313, that added together give a triangular number (783126 = T₁₂₅₁).

The spelling of 16813766313 in words is "sixteen billion, eight hundred thirteen million, seven hundred sixty-six thousand, three hundred thirteen".