85322844757 has 2 divisors, whose sum is σ = 85322844758. Its totient is φ = 85322844756.

The previous prime is 85322844727. The next prime is 85322844767. The reversal of 85322844757 is 75744822358.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44295937156 + 41026907601 = 210466^2 + 202551^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85322844757 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85322844698 and 85322844707.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85322844707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42661422378 + 42661422379.

It is an arithmetic number, because the mean of its divisors is an integer number (42661422379).

Almost surely, 2^85322844757 is an apocalyptic number.

It is an amenable number.

85322844757 is a deficient number, since it is larger than the sum of its proper divisors (1).

85322844757 is an equidigital number, since it uses as much as digits as its factorization.

85322844757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15052800, while the sum is 55.

The spelling of 85322844757 in words is "eighty-five billion, three hundred twenty-two million, eight hundred forty-four thousand, seven hundred fifty-seven".