85990924771 has 2 divisors, whose sum is σ = 85990924772. Its totient is φ = 85990924770.

The previous prime is 85990924727. The next prime is 85990924819. The reversal of 85990924771 is 17742909958.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85990924771 - 2³³ = 77400990179 is a prime.

It is not a weakly prime, because it can be changed into another prime (85990904771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42995462385 + 42995462386.

It is an arithmetic number, because the mean of its divisors is an integer number (42995462386).

Almost surely, 2^85990924771 is an apocalyptic number.

85990924771 is a deficient number, since it is larger than the sum of its proper divisors (1).

85990924771 is an equidigital number, since it uses as much as digits as its factorization.

85990924771 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11430720, while the sum is 61.

The spelling of 85990924771 in words is "eighty-five billion, nine hundred ninety million, nine hundred twenty-four thousand, seven hundred seventy-one".