188977068992 has 112 divisors (see below), whose sum is σ = 415571757120. Its totient is φ = 84807647232.

The previous prime is 188977068983. The next prime is 188977068997. The reversal of 188977068992 is 299860779881.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188977068997) 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, 8421884 + ... + 8444292.

Almost surely, 2^188977068992 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 188977068992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207785878560).

188977068992 is an abundant number, since it is smaller than the sum of its proper divisors (226594688128).

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

188977068992 is a wasteful number, since it uses less digits than its factorization.

188977068992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22798 (or 22788 counting only the distinct ones).

The product of its (nonzero) digits is 219469824, while the sum is 74.

The spelling of 188977068992 in words is "one hundred eighty-eight billion, nine hundred seventy-seven million, sixty-eight thousand, nine hundred ninety-two".