16615376791 has 6 divisors (see below), whose sum is σ = 17991798720. Its totient is φ = 15337270728.

The previous prime is 16615376777. The next prime is 16615376797. The reversal of 16615376791 is 19767351661.

It is not a de Polignac number, because 16615376791 - 2¹³ = 16615368599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16615376797) 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, 49157751 + ... + 49158088.

It is an arithmetic number, because the mean of its divisors is an integer number (2998633120).

Almost surely, 2^16615376791 is an apocalyptic number.

16615376791 is a deficient number, since it is larger than the sum of its proper divisors (1376421929).

16615376791 is an equidigital number, since it uses as much as digits as its factorization.

16615376791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98315865 (or 98315852 counting only the distinct ones).

The product of its digits is 1428840, while the sum is 52.

The spelling of 16615376791 in words is "sixteen billion, six hundred fifteen million, three hundred seventy-six thousand, seven hundred ninety-one".