86256343739 has 2 divisors, whose sum is σ = 86256343740. Its totient is φ = 86256343738.

The previous prime is 86256343577. The next prime is 86256343777. The reversal of 86256343739 is 93734365268.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86256343739 is a prime.

It is not a weakly prime, because it can be changed into another prime (86256343139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43128171869 + 43128171870.

It is an arithmetic number, because the mean of its divisors is an integer number (43128171870).

Almost surely, 2^86256343739 is an apocalyptic number.

86256343739 is a deficient number, since it is larger than the sum of its proper divisors (1).

86256343739 is an equidigital number, since it uses as much as digits as its factorization.

86256343739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19595520, while the sum is 56.

The spelling of 86256343739 in words is "eighty-six billion, two hundred fifty-six million, three hundred forty-three thousand, seven hundred thirty-nine".