16865912700 has 972 divisors, whose sum is σ = 69680415168. Its totient is φ = 3396556800.

The previous prime is 16865912683. The next prime is 16865912711. The reversal of 16865912700 is 721956861.

It is a super-2 number, since 2×16865912700² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 323 ways as a sum of consecutive naturals, for example, 231039864 + ... + 231039936.

Almost surely, 2^16865912700 is an apocalyptic number.

16865912700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16865912700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34840207584).

16865912700 is an abundant number, since it is smaller than the sum of its proper divisors (52814502468).

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

16865912700 is a wasteful number, since it uses less digits than its factorization.

16865912700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164 (or 134 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The spelling of 16865912700 in words is "sixteen billion, eight hundred sixty-five million, nine hundred twelve thousand, seven hundred".