87123756908 has 6 divisors (see below), whose sum is σ = 152466574596. Its totient is φ = 43561878452.

The previous prime is 87123756887. The next prime is 87123756919. The reversal of 87123756908 is 80965732178.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10890469610 + ... + 10890469617.

It is an arithmetic number, because the mean of its divisors is an integer number (25411095766).

Almost surely, 2^87123756908 is an apocalyptic number.

It is an amenable number.

87123756908 is a deficient number, since it is larger than the sum of its proper divisors (65342817688).

87123756908 is a wasteful number, since it uses less digits than its factorization.

87123756908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21780939231 (or 21780939229 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 56.

The spelling of 87123756908 in words is "eighty-seven billion, one hundred twenty-three million, seven hundred fifty-six thousand, nine hundred eight".