16985644170 has 32 divisors (see below), whose sum is σ = 44471505600. Its totient is φ = 4117731840.

The previous prime is 16985644147. The next prime is 16985644171. The reversal of 16985644170 is 7144658961.

It is not an unprimeable number, because it can be changed into a prime (16985644171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25735495 + ... + 25736154.

It is an arithmetic number, because the mean of its divisors is an integer number (1389734550).

Almost surely, 2^16985644170 is an apocalyptic number.

16985644170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16985644170 is an abundant number, since it is smaller than the sum of its proper divisors (27485861430).

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

16985644170 is a wasteful number, since it uses less digits than its factorization.

16985644170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51471670.

The product of its (nonzero) digits is 1451520, while the sum is 51.

The spelling of 16985644170 in words is "sixteen billion, nine hundred eighty-five million, six hundred forty-four thousand, one hundred seventy".