86668801091 has 2 divisors, whose sum is σ = 86668801092. Its totient is φ = 86668801090.

The previous prime is 86668801081. The next prime is 86668801097. The reversal of 86668801091 is 19010886668.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86668801091 - 2²⁶ = 86601692227 is a prime.

It is a super-2 number, since 2×86668801091² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (86668801097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43334400545 + 43334400546.

It is an arithmetic number, because the mean of its divisors is an integer number (43334400546).

Almost surely, 2^86668801091 is an apocalyptic number.

86668801091 is a deficient number, since it is larger than the sum of its proper divisors (1).

86668801091 is an equidigital number, since it uses as much as digits as its factorization.

86668801091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 995328, while the sum is 53.

The spelling of 86668801091 in words is "eighty-six billion, six hundred sixty-eight million, eight hundred one thousand, ninety-one".