86313990873581 has 2 divisors, whose sum is σ = 86313990873582. Its totient is φ = 86313990873580.

The previous prime is 86313990873557. The next prime is 86313990873647. The reversal of 86313990873581 is 18537809931368.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44937783709225 + 41376207164356 = 6703565^2 + 6432434^2 .

It is a cyclic number.

It is not a de Polignac number, because 86313990873581 - 2³⁸ = 86039112966637 is a prime.

It is a super-2 number, since 2×86313990873581² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86313990873511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43156995436790 + 43156995436791.

It is an arithmetic number, because the mean of its divisors is an integer number (43156995436791).

Almost surely, 2^{86313990873581} is an apocalyptic number.

It is an amenable number.

86313990873581 is a deficient number, since it is larger than the sum of its proper divisors (1).

86313990873581 is an equidigital number, since it uses as much as digits as its factorization.

86313990873581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 235146240, while the sum is 71.

The spelling of 86313990873581 in words is "eighty-six trillion, three hundred thirteen billion, nine hundred ninety million, eight hundred seventy-three thousand, five hundred eighty-one".