85057885013 has 2 divisors, whose sum is σ = 85057885014. Its totient is φ = 85057885012.

The previous prime is 85057884979. The next prime is 85057885039. The reversal of 85057885013 is 31058875058.

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., 46977094564 + 38080790449 = 216742^2 + 195143^2 .

It is a cyclic number.

It is not a de Polignac number, because 85057885013 - 2³² = 80762917717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85057885043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42528942506 + 42528942507.

It is an arithmetic number, because the mean of its divisors is an integer number (42528942507).

Almost surely, 2^85057885013 is an apocalyptic number.

It is an amenable number.

85057885013 is a deficient number, since it is larger than the sum of its proper divisors (1).

85057885013 is an equidigital number, since it uses as much as digits as its factorization.

85057885013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344000, while the sum is 50.

The spelling of 85057885013 in words is "eighty-five billion, fifty-seven million, eight hundred eighty-five thousand, thirteen".