87187581872 has 20 divisors (see below), whose sum is σ = 168932082000. Its totient is φ = 43592205888.

The previous prime is 87187581853. The next prime is 87187581893. The reversal of 87187581872 is 27818578178.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 445418 + ... + 610550.

It is an arithmetic number, because the mean of its divisors is an integer number (8446604100).

Almost surely, 2^87187581872 is an apocalyptic number.

It is an amenable number.

87187581872 is a deficient number, since it is larger than the sum of its proper divisors (81744500128).

87187581872 is a wasteful number, since it uses less digits than its factorization.

87187581872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198140 (or 198134 counting only the distinct ones).

The product of its digits is 14049280, while the sum is 62.

The spelling of 87187581872 in words is "eighty-seven billion, one hundred eighty-seven million, five hundred eighty-one thousand, eight hundred seventy-two".