87877523256 has 64 divisors (see below), whose sum is σ = 222436730880. Its totient is φ = 28928087040.

The previous prime is 87877523243. The next prime is 87877523299. The reversal of 87877523256 is 65232577878.

It is a self number, because there is not a number n which added to its sum of digits gives 87877523256.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1046761 + ... + 1127591.

It is an arithmetic number, because the mean of its divisors is an integer number (3475573920).

Almost surely, 2^87877523256 is an apocalyptic number.

It is an amenable number.

87877523256 is an abundant number, since it is smaller than the sum of its proper divisors (134559207624).

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

87877523256 is a wasteful number, since it uses less digits than its factorization.

87877523256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81404 (or 81400 counting only the distinct ones).

The product of its digits is 39513600, while the sum is 60.

The spelling of 87877523256 in words is "eighty-seven billion, eight hundred seventy-seven million, five hundred twenty-three thousand, two hundred fifty-six".