85163186833 has 2 divisors, whose sum is σ = 85163186834. Its totient is φ = 85163186832.

The previous prime is 85163186813. The next prime is 85163186839. The reversal of 85163186833 is 33868136158.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60367015809 + 24796171024 = 245697^2 + 157468^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85163186833 is a prime.

It is not a weakly prime, because it can be changed into another prime (85163186839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42581593416 + 42581593417.

It is an arithmetic number, because the mean of its divisors is an integer number (42581593417).

Almost surely, 2^85163186833 is an apocalyptic number.

It is an amenable number.

85163186833 is a deficient number, since it is larger than the sum of its proper divisors (1).

85163186833 is an equidigital number, since it uses as much as digits as its factorization.

85163186833 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2488320, while the sum is 52.

The spelling of 85163186833 in words is "eighty-five billion, one hundred sixty-three million, one hundred eighty-six thousand, eight hundred thirty-three".