87031512688 has 20 divisors (see below), whose sum is σ = 169755262200. Its totient is φ = 43223703104.

The previous prime is 87031512679. The next prime is 87031512703. The reversal of 87031512688 is 88621513078.

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, 18250870 + ... + 18255637.

It is an arithmetic number, because the mean of its divisors is an integer number (8487763110).

Almost surely, 2^87031512688 is an apocalyptic number.

It is an amenable number.

87031512688 is a deficient number, since it is larger than the sum of its proper divisors (82723749512).

87031512688 is a wasteful number, since it uses less digits than its factorization.

87031512688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36506664 (or 36506658 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 49.

The spelling of 87031512688 in words is "eighty-seven billion, thirty-one million, five hundred twelve thousand, six hundred eighty-eight".