87163905564 has 36 divisors (see below), whose sum is σ = 227928606360. Its totient is φ = 28052750880.

The previous prime is 87163905557. The next prime is 87163905611. The reversal of 87163905564 is 46550936178.

87163905564 is a `hidden beast` number, since 8 + 71 + 6 + 3 + 9 + 0 + 5 + 564 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 87163905564.

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 11 ways as a sum of consecutive naturals, for example, 41744122 + ... + 41746209.

Almost surely, 2^87163905564 is an apocalyptic number.

It is an amenable number.

87163905564 is an abundant number, since it is smaller than the sum of its proper divisors (140764700796).

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

87163905564 is a wasteful number, since it uses less digits than its factorization.

87163905564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83490370 (or 83490365 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 54.

The spelling of 87163905564 in words is "eighty-seven billion, one hundred sixty-three million, nine hundred five thousand, five hundred sixty-four".