86664848077 has 2 divisors, whose sum is σ = 86664848078. Its totient is φ = 86664848076.

The previous prime is 86664848009. The next prime is 86664848087. The reversal of 86664848077 is 77084846668.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43589505961 + 43075342116 = 208781^2 + 207546^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86664848077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86664848087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43332424038 + 43332424039.

It is an arithmetic number, because the mean of its divisors is an integer number (43332424039).

Almost surely, 2^86664848077 is an apocalyptic number.

It is an amenable number.

86664848077 is a deficient number, since it is larger than the sum of its proper divisors (1).

86664848077 is an equidigital number, since it uses as much as digits as its factorization.

86664848077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86704128, while the sum is 64.

The spelling of 86664848077 in words is "eighty-six billion, six hundred sixty-four million, eight hundred forty-eight thousand, seventy-seven".