86594988981 has 8 divisors (see below), whose sum is σ = 121536826720. Its totient is φ = 54691571952.

The previous prime is 86594988973. The next prime is 86594989007. The reversal of 86594988981 is 18988949568.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 86594988981 - 2³ = 86594988973 is a prime.

It is a super-2 number, since 2×86594988981² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86594988881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 759605110 + ... + 759605223.

It is an arithmetic number, because the mean of its divisors is an integer number (15192103340).

Almost surely, 2^86594988981 is an apocalyptic number.

It is an amenable number.

86594988981 is a deficient number, since it is larger than the sum of its proper divisors (34941837739).

86594988981 is a wasteful number, since it uses less digits than its factorization.

86594988981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1519210355.

The product of its digits is 358318080, while the sum is 75.

The spelling of 86594988981 in words is "eighty-six billion, five hundred ninety-four million, nine hundred eighty-eight thousand, nine hundred eighty-one".