86805988656 has 40 divisors (see below), whose sum is σ = 225422905344. Its totient is φ = 28783832640.

The previous prime is 86805988639. The next prime is 86805988681. The reversal of 86805988656 is 65688950868.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4725016 + ... + 4743351.

Almost surely, 2^86805988656 is an apocalyptic number.

It is an amenable number.

86805988656 is an abundant number, since it is smaller than the sum of its proper divisors (138616916688).

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

86805988656 is a wasteful number, since it uses less digits than its factorization.

86805988656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9468569 (or 9468563 counting only the distinct ones).

The product of its (nonzero) digits is 199065600, while the sum is 69.

The spelling of 86805988656 in words is "eighty-six billion, eight hundred five million, nine hundred eighty-eight thousand, six hundred fifty-six".