86575569893 has 2 divisors, whose sum is σ = 86575569894. Its totient is φ = 86575569892.

The previous prime is 86575569851. The next prime is 86575569901. The reversal of 86575569893 is 39896557568.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83533716484 + 3041853409 = 289022^2 + 55153^2 .

It is a cyclic number.

It is not a de Polignac number, because 86575569893 - 2⁸ = 86575569637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86575560893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43287784946 + 43287784947.

It is an arithmetic number, because the mean of its divisors is an integer number (43287784947).

Almost surely, 2^86575569893 is an apocalyptic number.

It is an amenable number.

86575569893 is a deficient number, since it is larger than the sum of its proper divisors (1).

86575569893 is an equidigital number, since it uses as much as digits as its factorization.

86575569893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 489888000, while the sum is 71.

The spelling of 86575569893 in words is "eighty-six billion, five hundred seventy-five million, five hundred sixty-nine thousand, eight hundred ninety-three".