86186115247 has 2 divisors, whose sum is σ = 86186115248. Its totient is φ = 86186115246.

The previous prime is 86186115193. The next prime is 86186115259. The reversal of 86186115247 is 74251168168.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86186115247 is a prime.

It is a super-2 number, since 2×86186115247² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 86186115247.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86186118247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43093057623 + 43093057624.

It is an arithmetic number, because the mean of its divisors is an integer number (43093057624).

Almost surely, 2^86186115247 is an apocalyptic number.

86186115247 is a deficient number, since it is larger than the sum of its proper divisors (1).

86186115247 is an equidigital number, since it uses as much as digits as its factorization.

86186115247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 645120, while the sum is 49.

The spelling of 86186115247 in words is "eighty-six billion, one hundred eighty-six million, one hundred fifteen thousand, two hundred forty-seven".