85315883441 has 2 divisors, whose sum is σ = 85315883442. Its totient is φ = 85315883440.

The previous prime is 85315883437. The next prime is 85315883449. The reversal of 85315883441 is 14438851358.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82903109041 + 2412774400 = 287929^2 + 49120^2 .

It is a cyclic number.

It is not a de Polignac number, because 85315883441 - 2² = 85315883437 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85315883441.

It is not a weakly prime, because it can be changed into another prime (85315883449) 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, 42657941720 + 42657941721.

It is an arithmetic number, because the mean of its divisors is an integer number (42657941721).

Almost surely, 2^85315883441 is an apocalyptic number.

It is an amenable number.

85315883441 is a deficient number, since it is larger than the sum of its proper divisors (1).

85315883441 is an equidigital number, since it uses as much as digits as its factorization.

85315883441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1843200, while the sum is 50.

The spelling of 85315883441 in words is "eighty-five billion, three hundred fifteen million, eight hundred eighty-three thousand, four hundred forty-one".