86256343139 has 2 divisors, whose sum is σ = 86256343140. Its totient is φ = 86256343138.

The previous prime is 86256343133. The next prime is 86256343141. The reversal of 86256343139 is 93134365268.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86256343139 - 2³² = 81961375843 is a prime.

Together with 86256343141, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (86256343133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43128171569 + 43128171570.

It is an arithmetic number, because the mean of its divisors is an integer number (43128171570).

Almost surely, 2^86256343139 is an apocalyptic number.

86256343139 is a deficient number, since it is larger than the sum of its proper divisors (1).

86256343139 is an equidigital number, since it uses as much as digits as its factorization.

86256343139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2799360, while the sum is 50.

The spelling of 86256343139 in words is "eighty-six billion, two hundred fifty-six million, three hundred forty-three thousand, one hundred thirty-nine".