86544018893 has 2 divisors, whose sum is σ = 86544018894. Its totient is φ = 86544018892.

The previous prime is 86544018851. The next prime is 86544018937. The reversal of 86544018893 is 39881044568.

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., 86246180329 + 297838564 = 293677^2 + 17258^2 .

It is a cyclic number.

It is not a de Polignac number, because 86544018893 - 2¹⁰ = 86544017869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86544018793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43272009446 + 43272009447.

It is an arithmetic number, because the mean of its divisors is an integer number (43272009447).

Almost surely, 2^86544018893 is an apocalyptic number.

It is an amenable number.

86544018893 is a deficient number, since it is larger than the sum of its proper divisors (1).

86544018893 is an equidigital number, since it uses as much as digits as its factorization.

86544018893 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6635520, while the sum is 56.

The spelling of 86544018893 in words is "eighty-six billion, five hundred forty-four million, eighteen thousand, eight hundred ninety-three".