87618884580 has 36 divisors (see below), whose sum is σ = 265777283772. Its totient is φ = 23365035840.

The previous prime is 87618884569. The next prime is 87618884599. The reversal of 87618884580 is 8548881678.

87618884580 is a `hidden beast` number, since 8 + 7 + 618 + 8 + 8 + 4 + 5 + 8 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 55612958976 + 32005925604 = 235824^2 + 178902^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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 11 ways as a sum of consecutive naturals, for example, 243385611 + ... + 243385970.

It is an arithmetic number, because the mean of its divisors is an integer number (7382702327).

Almost surely, 2^87618884580 is an apocalyptic number.

It is an amenable number.

87618884580 is an abundant number, since it is smaller than the sum of its proper divisors (178158399192).

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

87618884580 is a wasteful number, since it uses less digits than its factorization.

87618884580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486771596 (or 486771591 counting only the distinct ones).

The product of its (nonzero) digits is 27525120, while the sum is 63.

The spelling of 87618884580 in words is "eighty-seven billion, six hundred eighteen million, eight hundred eighty-four thousand, five hundred eighty".