86264942509 has 2 divisors, whose sum is σ = 86264942510. Its totient is φ = 86264942508.

The previous prime is 86264942501. The next prime is 86264942587. The reversal of 86264942509 is 90524946268.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86129336484 + 135606025 = 293478^2 + 11645^2 .

It is a cyclic number.

It is not a de Polignac number, because 86264942509 - 2³ = 86264942501 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86264942509.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86264942501) 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, 43132471254 + 43132471255.

It is an arithmetic number, because the mean of its divisors is an integer number (43132471255).

Almost surely, 2^86264942509 is an apocalyptic number.

It is an amenable number.

86264942509 is a deficient number, since it is larger than the sum of its proper divisors (1).

86264942509 is an equidigital number, since it uses as much as digits as its factorization.

86264942509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7464960, while the sum is 55.

The spelling of 86264942509 in words is "eighty-six billion, two hundred sixty-four million, nine hundred forty-two thousand, five hundred nine".