86469560581 has 2 divisors, whose sum is σ = 86469560582. Its totient is φ = 86469560580.

The previous prime is 86469560549. The next prime is 86469560659. The reversal of 86469560581 is 18506596468.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77902392100 + 8567168481 = 279110^2 + 92559^2 .

It is a cyclic number.

It is not a de Polignac number, because 86469560581 - 2⁵ = 86469560549 is a prime.

It is a super-2 number, since 2×86469560581² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86469560081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43234780290 + 43234780291.

It is an arithmetic number, because the mean of its divisors is an integer number (43234780291).

Almost surely, 2^86469560581 is an apocalyptic number.

It is an amenable number.

86469560581 is a deficient number, since it is larger than the sum of its proper divisors (1).

86469560581 is an equidigital number, since it uses as much as digits as its factorization.

86469560581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12441600, while the sum is 58.

The spelling of 86469560581 in words is "eighty-six billion, four hundred sixty-nine million, five hundred sixty thousand, five hundred eighty-one".