16977984475 has 6 divisors (see below), whose sum is σ = 21052700780. Its totient is φ = 13582387560.

The previous prime is 16977984469. The next prime is 16977984493. The reversal of 16977984475 is 57448977961.

It is a de Polignac number, because none of the positive numbers 2^k-16977984475 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16977984475.

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, 339559665 + ... + 339559714.

Almost surely, 2^16977984475 is an apocalyptic number.

16977984475 is a deficient number, since it is larger than the sum of its proper divisors (4074716305).

16977984475 is an equidigital number, since it uses as much as digits as its factorization.

16977984475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679119389 (or 679119384 counting only the distinct ones).

The product of its digits is 106686720, while the sum is 67.

The spelling of 16977984475 in words is "sixteen billion, nine hundred seventy-seven million, nine hundred eighty-four thousand, four hundred seventy-five".