85426443659 has 4 divisors (see below), whose sum is σ = 85452325920. Its totient is φ = 85400561400.

The previous prime is 85426443653. The next prime is 85426443689. The reversal of 85426443659 is 95634462458.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85426443659 - 2⁴ = 85426443643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85426443653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12936179 + ... + 12942780.

It is an arithmetic number, because the mean of its divisors is an integer number (21363081480).

Almost surely, 2^85426443659 is an apocalyptic number.

85426443659 is a deficient number, since it is larger than the sum of its proper divisors (25882261).

85426443659 is a wasteful number, since it uses less digits than its factorization.

85426443659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25882260.

The product of its digits is 24883200, while the sum is 56.

The spelling of 85426443659 in words is "eighty-five billion, four hundred twenty-six million, four hundred forty-three thousand, six hundred fifty-nine".