85304545013 has 2 divisors, whose sum is σ = 85304545014. Its totient is φ = 85304545012.

The previous prime is 85304544989. The next prime is 85304545033. The reversal of 85304545013 is 31054540358.

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., 67204340644 + 18100204369 = 259238^2 + 134537^2 .

It is a cyclic number.

It is not a de Polignac number, because 85304545013 - 2³² = 81009577717 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85304545033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42652272506 + 42652272507.

It is an arithmetic number, because the mean of its divisors is an integer number (42652272507).

Almost surely, 2^85304545013 is an apocalyptic number.

It is an amenable number.

85304545013 is a deficient number, since it is larger than the sum of its proper divisors (1).

85304545013 is an equidigital number, since it uses as much as digits as its factorization.

85304545013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144000, while the sum is 38.

The spelling of 85304545013 in words is "eighty-five billion, three hundred four million, five hundred forty-five thousand, thirteen".