86061819591 has 12 divisors (see below), whose sum is σ = 135612564360. Its totient is φ = 52158678480.

The previous prime is 86061819583. The next prime is 86061819617. The reversal of 86061819591 is 19591816068.

86061819591 is a `hidden beast` number, since 8 + 6 + 0 + 618 + 19 + 5 + 9 + 1 = 666.

It is not a de Polignac number, because 86061819591 - 2³ = 86061819583 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86061819511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 434655556 + ... + 434655753.

It is an arithmetic number, because the mean of its divisors is an integer number (11301047030).

Almost surely, 2^86061819591 is an apocalyptic number.

86061819591 is a deficient number, since it is larger than the sum of its proper divisors (49550744769).

86061819591 is a wasteful number, since it uses less digits than its factorization.

86061819591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869311326 (or 869311323 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 54.

The spelling of 86061819591 in words is "eighty-six billion, sixty-one million, eight hundred nineteen thousand, five hundred ninety-one".