85446234593 has 2 divisors, whose sum is σ = 85446234594. Its totient is φ = 85446234592.

The previous prime is 85446234589. The next prime is 85446234611. The reversal of 85446234593 is 39543264458.

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., 69162688144 + 16283546449 = 262988^2 + 127607^2 .

It is a cyclic number.

It is not a de Polignac number, because 85446234593 - 2² = 85446234589 is a prime.

It is a super-2 number, since 2×85446234593² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (85446234563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42723117296 + 42723117297.

It is an arithmetic number, because the mean of its divisors is an integer number (42723117297).

Almost surely, 2^85446234593 is an apocalyptic number.

It is an amenable number.

85446234593 is a deficient number, since it is larger than the sum of its proper divisors (1).

85446234593 is an equidigital number, since it uses as much as digits as its factorization.

85446234593 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12441600, while the sum is 53.

The spelling of 85446234593 in words is "eighty-five billion, four hundred forty-six million, two hundred thirty-four thousand, five hundred ninety-three".