16971083378 has 18 divisors (see below), whose sum is σ = 25628281263. Its totient is φ = 8428705500.

The previous prime is 16971083369. The next prime is 16971083387. The reversal of 16971083378 is 87338017961.

It is an interprime number because it is at equal distance from previous prime (16971083369) and next prime (16971083387).

It can be written as a sum of positive squares in only one way, i.e., 8485541689 + 8485541689 = 92117^2 + 92117^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=92117.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 46242551 + ... + 46242917.

Almost surely, 2^16971083378 is an apocalyptic number.

16971083378 is a deficient number, since it is larger than the sum of its proper divisors (8657197885).

16971083378 is an frugal number, since it uses more digits than its factorization.

16971083378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1238 (or 620 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 53.

The spelling of 16971083378 in words is "sixteen billion, nine hundred seventy-one million, eighty-three thousand, three hundred seventy-eight".