85768422643 has 2 divisors, whose sum is σ = 85768422644. Its totient is φ = 85768422642.

The previous prime is 85768422569. The next prime is 85768422689. The reversal of 85768422643 is 34622486758.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85768422643 - 2²⁵ = 85734868211 is a prime.

It is not a weakly prime, because it can be changed into another prime (85768452643) 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, 42884211321 + 42884211322.

It is an arithmetic number, because the mean of its divisors is an integer number (42884211322).

Almost surely, 2^85768422643 is an apocalyptic number.

85768422643 is a deficient number, since it is larger than the sum of its proper divisors (1).

85768422643 is an equidigital number, since it uses as much as digits as its factorization.

85768422643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15482880, while the sum is 55.

The spelling of 85768422643 in words is "eighty-five billion, seven hundred sixty-eight million, four hundred twenty-two thousand, six hundred forty-three".