87231126528 has 990 divisors, whose sum is σ = 330703756416. Its totient is φ = 22824861696.

The previous prime is 87231126509. The next prime is 87231126553. The reversal of 87231126528 is 82562113278.

87231126528 is a `hidden beast` number, since 8 + 7 + 2 + 3 + 112 + 6 + 528 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 89 ways as a sum of consecutive naturals, for example, 686859201 + ... + 686859327.

Almost surely, 2^87231126528 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87231126528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165351878208).

87231126528 is an abundant number, since it is smaller than the sum of its proper divisors (243472629888).

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

87231126528 is a wasteful number, since it uses less digits than its factorization.

87231126528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199 (or 152 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The spelling of 87231126528 in words is "eighty-seven billion, two hundred thirty-one million, one hundred twenty-six thousand, five hundred twenty-eight".