86416597081 has 2 divisors, whose sum is σ = 86416597082. Its totient is φ = 86416597080.

The previous prime is 86416597067. The next prime is 86416597087. The reversal of 86416597081 is 18079561468.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83255908681 + 3160688400 = 288541^2 + 56220^2 .

It is a cyclic number.

It is not a de Polignac number, because 86416597081 - 2⁵ = 86416597049 is a prime.

It is a super-2 number, since 2×86416597081² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (86416597087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43208298540 + 43208298541.

It is an arithmetic number, because the mean of its divisors is an integer number (43208298541).

Almost surely, 2^86416597081 is an apocalyptic number.

It is an amenable number.

86416597081 is a deficient number, since it is larger than the sum of its proper divisors (1).

86416597081 is an equidigital number, since it uses as much as digits as its factorization.

86416597081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2903040, while the sum is 55.

The spelling of 86416597081 in words is "eighty-six billion, four hundred sixteen million, five hundred ninety-seven thousand, eighty-one".