85345745117 has 2 divisors, whose sum is σ = 85345745118. Its totient is φ = 85345745116.

The previous prime is 85345745113. The next prime is 85345745119. The reversal of 85345745117 is 71154754358.

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., 84366430681 + 979314436 = 290459^2 + 31294^2 .

It is a cyclic number.

It is not a de Polignac number, because 85345745117 - 2² = 85345745113 is a prime.

Together with 85345745119, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85345745113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42672872558 + 42672872559.

It is an arithmetic number, because the mean of its divisors is an integer number (42672872559).

Almost surely, 2^85345745117 is an apocalyptic number.

It is an amenable number.

85345745117 is a deficient number, since it is larger than the sum of its proper divisors (1).

85345745117 is an equidigital number, since it uses as much as digits as its factorization.

85345745117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2352000, while the sum is 50.

The spelling of 85345745117 in words is "eighty-five billion, three hundred forty-five million, seven hundred forty-five thousand, one hundred seventeen".