86563924693 has 2 divisors, whose sum is σ = 86563924694. Its totient is φ = 86563924692.

The previous prime is 86563924609. The next prime is 86563924807. The reversal of 86563924693 is 39642936568.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48707607204 + 37856317489 = 220698^2 + 194567^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86563924693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86563924393) 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, 43281962346 + 43281962347.

It is an arithmetic number, because the mean of its divisors is an integer number (43281962347).

Almost surely, 2^86563924693 is an apocalyptic number.

It is an amenable number.

86563924693 is a deficient number, since it is larger than the sum of its proper divisors (1).

86563924693 is an equidigital number, since it uses as much as digits as its factorization.

86563924693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50388480, while the sum is 61.

The spelling of 86563924693 in words is "eighty-six billion, five hundred sixty-three million, nine hundred twenty-four thousand, six hundred ninety-three".