186402045664 has 72 divisors (see below), whose sum is σ = 384018033672. Its totient is φ = 89058266880.

The previous prime is 186402045653. The next prime is 186402045673. The reversal of 186402045664 is 466540204681.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18463402 + ... + 18473494.

It is an arithmetic number, because the mean of its divisors is an integer number (5333583801).

Almost surely, 2^186402045664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 186402045664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192009016836).

186402045664 is an abundant number, since it is smaller than the sum of its proper divisors (197615988008).

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

186402045664 is a wasteful number, since it uses less digits than its factorization.

186402045664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11240 (or 11209 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 46.

The spelling of 186402045664 in words is "one hundred eighty-six billion, four hundred two million, forty-five thousand, six hundred sixty-four".