16856667402 has 16 divisors (see below), whose sum is σ = 33728103552. Its totient is φ = 5616427680.

The previous prime is 16856667391. The next prime is 16856667413. The reversal of 16856667402 is 20476665861.

It is an interprime number because it is at equal distance from previous prime (16856667391) and next prime (16856667413).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 600499 + ... + 627942.

It is an arithmetic number, because the mean of its divisors is an integer number (2108006472).

Almost surely, 2^16856667402 is an apocalyptic number.

16856667402 is an abundant number, since it is smaller than the sum of its proper divisors (16871436150).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16856667402 is a wasteful number, since it uses less digits than its factorization.

16856667402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1230733.

The product of its (nonzero) digits is 2903040, while the sum is 51.

The spelling of 16856667402 in words is "sixteen billion, eight hundred fifty-six million, six hundred sixty-seven thousand, four hundred two".