16688960516 has 18 divisors (see below), whose sum is σ = 29255625630. Its totient is φ = 8330234592.

The previous prime is 16688960459. The next prime is 16688960557. The reversal of 16688960516 is 61506988661.

It can be written as a sum of positive squares in only one way, i.e., 9808921600 + 6880038916 = 99040^2 + 82946^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1527200 + ... + 1538088.

It is an arithmetic number, because the mean of its divisors is an integer number (1625312535).

Almost surely, 2^16688960516 is an apocalyptic number.

It is an amenable number.

16688960516 is a deficient number, since it is larger than the sum of its proper divisors (12566665114).

16688960516 is an equidigital number, since it uses as much as digits as its factorization.

16688960516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12131 (or 11510 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 56.

The spelling of 16688960516 in words is "sixteen billion, six hundred eighty-eight million, nine hundred sixty thousand, five hundred sixteen".