86957987028 has 48 divisors (see below), whose sum is σ = 221544039360. Its totient is φ = 26327520000.

The previous prime is 86957986967. The next prime is 86957987041. The reversal of 86957987028 is 82078975968.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142723 + ... + 440778.

It is an arithmetic number, because the mean of its divisors is an integer number (4615500820).

Almost surely, 2^86957987028 is an apocalyptic number.

It is an amenable number.

86957987028 is an abundant number, since it is smaller than the sum of its proper divisors (134586052332).

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

86957987028 is a wasteful number, since it uses less digits than its factorization.

86957987028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584648 (or 584646 counting only the distinct ones).

The product of its (nonzero) digits is 121927680, while the sum is 69.

The spelling of 86957987028 in words is "eighty-six billion, nine hundred fifty-seven million, nine hundred eighty-seven thousand, twenty-eight".