85631766083291 has 2 divisors, whose sum is σ = 85631766083292. Its totient is φ = 85631766083290.

The previous prime is 85631766083197. The next prime is 85631766083299. The reversal of 85631766083291 is 19238066713658.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85631766083291 - 2³⁴ = 85614586214107 is a prime.

It is not a weakly prime, because it can be changed into another prime (85631766083299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42815883041645 + 42815883041646.

It is an arithmetic number, because the mean of its divisors is an integer number (42815883041646).

Almost surely, 2^{85631766083291} is an apocalyptic number.

85631766083291 is a deficient number, since it is larger than the sum of its proper divisors (1).

85631766083291 is an equidigital number, since it uses as much as digits as its factorization.

85631766083291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 78382080, while the sum is 65.

The spelling of 85631766083291 in words is "eighty-five trillion, six hundred thirty-one billion, seven hundred sixty-six million, eighty-three thousand, two hundred ninety-one".