86351284391 has 2 divisors, whose sum is σ = 86351284392. Its totient is φ = 86351284390.

The previous prime is 86351284381. The next prime is 86351284427. The reversal of 86351284391 is 19348215368.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86351284391 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86351284351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43175642195 + 43175642196.

It is an arithmetic number, because the mean of its divisors is an integer number (43175642196).

Almost surely, 2^86351284391 is an apocalyptic number.

86351284391 is a deficient number, since it is larger than the sum of its proper divisors (1).

86351284391 is an equidigital number, since it uses as much as digits as its factorization.

86351284391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1244160, while the sum is 50.

The spelling of 86351284391 in words is "eighty-six billion, three hundred fifty-one million, two hundred eighty-four thousand, three hundred ninety-one".