85043085077 has 2 divisors, whose sum is σ = 85043085078. Its totient is φ = 85043085076.

The previous prime is 85043085073. The next prime is 85043085079. The reversal of 85043085077 is 77058034058.

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., 73761671281 + 11281413796 = 271591^2 + 106214^2 .

It is a cyclic number.

It is not a de Polignac number, because 85043085077 - 2² = 85043085073 is a prime.

Together with 85043085079, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85043085073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42521542538 + 42521542539.

It is an arithmetic number, because the mean of its divisors is an integer number (42521542539).

Almost surely, 2^85043085077 is an apocalyptic number.

It is an amenable number.

85043085077 is a deficient number, since it is larger than the sum of its proper divisors (1).

85043085077 is an equidigital number, since it uses as much as digits as its factorization.

85043085077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 940800, while the sum is 47.

The spelling of 85043085077 in words is "eighty-five billion, forty-three million, eighty-five thousand, seventy-seven".