187696863992 has 256 divisors, whose sum is σ = 413668425600. Its totient is φ = 79732224000.

The previous prime is 187696863973. The next prime is 187696863997. The reversal of 187696863992 is 299368696781.

It is a super-2 number, since 2×187696863992² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (74).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (187696863997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1858384742 + ... + 1858384842.

Almost surely, 2^187696863992 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 187696863992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (206834212800).

187696863992 is an abundant number, since it is smaller than the sum of its proper divisors (225971561608).

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

187696863992 is a wasteful number, since it uses less digits than its factorization.

187696863992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319 (or 293 counting only the distinct ones).

The product of its digits is 423263232, while the sum is 74.

The spelling of 187696863992 in words is "one hundred eighty-seven billion, six hundred ninety-six million, eight hundred sixty-three thousand, nine hundred ninety-two".