16856174120 has 16 divisors (see below), whose sum is σ = 37926391860. Its totient is φ = 6742469632.

The previous prime is 16856174119. The next prime is 16856174123. The reversal of 16856174120 is 2147165861.

It can be written as a sum of positive squares in 2 ways, for example, as 15902723236 + 953450884 = 126106^2 + 30878^2 .

It is not an unprimeable number, because it can be changed into a prime (16856174123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210702137 + ... + 210702216.

Almost surely, 2^16856174120 is an apocalyptic number.

16856174120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16856174120 is an abundant number, since it is smaller than the sum of its proper divisors (21070217740).

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

16856174120 is a wasteful number, since it uses less digits than its factorization.

16856174120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421404364 (or 421404360 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 41.

The spelling of 16856174120 in words is "sixteen billion, eight hundred fifty-six million, one hundred seventy-four thousand, one hundred twenty".