16940978848 has 12 divisors (see below), whose sum is σ = 33352552170. Its totient is φ = 8470489408.

The previous prime is 16940978833. The next prime is 16940978881. The reversal of 16940978848 is 84887904961.

It can be written as a sum of positive squares in only one way, i.e., 11241936784 + 5699042064 = 106028^2 + 75492^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16940978848.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 264702763 + ... + 264702826.

Almost surely, 2^16940978848 is an apocalyptic number.

It is an amenable number.

16940978848 is a deficient number, since it is larger than the sum of its proper divisors (16411573322).

16940978848 is an equidigital number, since it uses as much as digits as its factorization.

16940978848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529405599 (or 529405591 counting only the distinct ones).

The product of its (nonzero) digits is 27869184, while the sum is 64.

The spelling of 16940978848 in words is "sixteen billion, nine hundred forty million, nine hundred seventy-eight thousand, eight hundred forty-eight".