186664992120 has 96 divisors (see below), whose sum is σ = 607399322400. Its totient is φ = 49716769536.

The previous prime is 186664992097. The next prime is 186664992133. The reversal of 186664992120 is 21299466681.

It is a congruent number.

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, 18735 + ... + 611294.

It is an arithmetic number, because the mean of its divisors is an integer number (6327076275).

Almost surely, 2^186664992120 is an apocalyptic number.

186664992120 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 186664992120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (303699661200).

186664992120 is an abundant number, since it is smaller than the sum of its proper divisors (420734330280).

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

186664992120 is a wasteful number, since it uses less digits than its factorization.

186664992120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630869 (or 630862 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 54.

The spelling of 186664992120 in words is "one hundred eighty-six billion, six hundred sixty-four million, nine hundred ninety-two thousand, one hundred twenty".