16685000018700 has 72 divisors (see below), whose sum is σ = 51988748788368. Its totient is φ = 4107076926720.

The previous prime is 16685000018669. The next prime is 16685000018719. The reversal of 16685000018700 is 781000058661.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2139098667 + ... + 2139106466.

It is an arithmetic number, because the mean of its divisors is an integer number (722065955394).

Almost surely, 2^{16685000018700} is an apocalyptic number.

16685000018700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16685000018700 is an abundant number, since it is smaller than the sum of its proper divisors (35303748769668).

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

16685000018700 is a wasteful number, since it uses less digits than its factorization.

16685000018700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4278205163 (or 4278205156 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 42.

The spelling of 16685000018700 in words is "sixteen trillion, six hundred eighty-five billion, eighteen thousand, seven hundred".