87932609872 has 20 divisors (see below), whose sum is σ = 170572520160. Its totient is φ = 43913895008.

The previous prime is 87932609839. The next prime is 87932609879. The reversal of 87932609872 is 27890623978.

It is a self number, because there is not a number n which added to its sum of digits gives 87932609872.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87932609879) 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, 3261778 + ... + 3288625.

It is an arithmetic number, because the mean of its divisors is an integer number (8528626008).

Almost surely, 2^87932609872 is an apocalyptic number.

It is an amenable number.

87932609872 is a deficient number, since it is larger than the sum of its proper divisors (82639910288).

87932609872 is a wasteful number, since it uses less digits than its factorization.

87932609872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6551250 (or 6551244 counting only the distinct ones).

The product of its (nonzero) digits is 18289152, while the sum is 61.

The spelling of 87932609872 in words is "eighty-seven billion, nine hundred thirty-two million, six hundred nine thousand, eight hundred seventy-two".