86444818177 has 2 divisors, whose sum is σ = 86444818178. Its totient is φ = 86444818176.

The previous prime is 86444818153. The next prime is 86444818193. The reversal of 86444818177 is 77181844468.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66008400241 + 20436417936 = 256921^2 + 142956^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86444818177 is a prime.

It is not a weakly prime, because it can be changed into another prime (86444818477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43222409088 + 43222409089.

It is an arithmetic number, because the mean of its divisors is an integer number (43222409089).

Almost surely, 2^86444818177 is an apocalyptic number.

It is an amenable number.

86444818177 is a deficient number, since it is larger than the sum of its proper divisors (1).

86444818177 is an equidigital number, since it uses as much as digits as its factorization.

86444818177 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9633792, while the sum is 58.

The spelling of 86444818177 in words is "eighty-six billion, four hundred forty-four million, eight hundred eighteen thousand, one hundred seventy-seven".