187807990912 has 32 divisors (see below), whose sum is σ = 374181793920. Its totient is φ = 93895697664.

The previous prime is 187807990907. The next prime is 187807990913. The reversal of 187807990912 is 219099708781.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (187807990913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1544893 + ... + 1662019.

It is an arithmetic number, because the mean of its divisors is an integer number (11693181060).

Almost surely, 2^187807990912 is an apocalyptic number.

It is an amenable number.

187807990912 is a deficient number, since it is larger than the sum of its proper divisors (186373803008).

187807990912 is a wasteful number, since it uses less digits than its factorization.

187807990912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129668 (or 129656 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 61.

The spelling of 187807990912 in words is "one hundred eighty-seven billion, eight hundred seven million, nine hundred ninety thousand, nine hundred twelve".