85392538529 has 2 divisors, whose sum is σ = 85392538530. Its totient is φ = 85392538528.

The previous prime is 85392538519. The next prime is 85392538591. The reversal of 85392538529 is 92583529358.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70930070929 + 14462467600 = 266327^2 + 120260^2 .

It is a cyclic number.

It is not a de Polignac number, because 85392538529 - 2⁴ = 85392538513 is a prime.

It is not a weakly prime, because it can be changed into another prime (85392538519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42696269264 + 42696269265.

It is an arithmetic number, because the mean of its divisors is an integer number (42696269265).

Almost surely, 2^85392538529 is an apocalyptic number.

It is an amenable number.

85392538529 is a deficient number, since it is larger than the sum of its proper divisors (1).

85392538529 is an equidigital number, since it uses as much as digits as its factorization.

85392538529 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328000, while the sum is 59.

The spelling of 85392538529 in words is "eighty-five billion, three hundred ninety-two million, five hundred thirty-eight thousand, five hundred twenty-nine".