87528716787764 has 12 divisors (see below), whose sum is σ = 175057433575584. Its totient is φ = 37512307194744.

The previous prime is 87528716787751. The next prime is 87528716787773. The reversal of 87528716787764 is 46778761782578.

87528716787764 is an admirable number.

It is a super-2 number, since 2×87528716787764² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1563012799754 + ... + 1563012799809.

It is an arithmetic number, because the mean of its divisors is an integer number (14588119464632).

Almost surely, 2^{87528716787764} is an apocalyptic number.

It is an amenable number.

87528716787764 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

87528716787764 is a wasteful number, since it uses less digits than its factorization.

87528716787764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3126025599574 (or 3126025599572 counting only the distinct ones).

The product of its digits is 12391464960, while the sum is 83.

The spelling of 87528716787764 in words is "eighty-seven trillion, five hundred twenty-eight billion, seven hundred sixteen million, seven hundred eighty-seven thousand, seven hundred sixty-four".