85385392297 has 2 divisors, whose sum is σ = 85385392298. Its totient is φ = 85385392296.

The previous prime is 85385392291. The next prime is 85385392321. The reversal of 85385392297 is 79229358358.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58624031376 + 26761360921 = 242124^2 + 163589^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85385392297 is a prime.

It is not a weakly prime, because it can be changed into another prime (85385392291) 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, 42692696148 + 42692696149.

It is an arithmetic number, because the mean of its divisors is an integer number (42692696149).

Almost surely, 2^85385392297 is an apocalyptic number.

It is an amenable number.

85385392297 is a deficient number, since it is larger than the sum of its proper divisors (1).

85385392297 is an equidigital number, since it uses as much as digits as its factorization.

85385392297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32659200, while the sum is 61.

The spelling of 85385392297 in words is "eighty-five billion, three hundred eighty-five million, three hundred ninety-two thousand, two hundred ninety-seven".