86849051591 has 6 divisors (see below), whose sum is σ = 89018987976. Its totient is φ = 84730780400.

The previous prime is 86849051581. The next prime is 86849051593. The reversal of 86849051591 is 19515094868.

It is not a de Polignac number, because 86849051591 - 2²⁶ = 86781942727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86849051593) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25830875 + ... + 25834236.

It is an arithmetic number, because the mean of its divisors is an integer number (14836497996).

Almost surely, 2^86849051591 is an apocalyptic number.

86849051591 is a deficient number, since it is larger than the sum of its proper divisors (2169936385).

86849051591 is an equidigital number, since it uses as much as digits as its factorization.

86849051591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51665193 (or 51665152 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 56.

The spelling of 86849051591 in words is "eighty-six billion, eight hundred forty-nine million, fifty-one thousand, five hundred ninety-one".