85397804859 has 16 divisors (see below), whose sum is σ = 113988137760. Its totient is φ = 56869712640.

The previous prime is 85397804827. The next prime is 85397804873. The reversal of 85397804859 is 95840879358.

It is a happy number.

It is not a de Polignac number, because 85397804859 - 2⁵ = 85397804827 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85397804859.

It is not an unprimeable number, because it can be changed into a prime (85397804659) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14021887 + ... + 14027975.

It is an arithmetic number, because the mean of its divisors is an integer number (7124258610).

Almost surely, 2^85397804859 is an apocalyptic number.

85397804859 is a deficient number, since it is larger than the sum of its proper divisors (28590332901).

85397804859 is a wasteful number, since it uses less digits than its factorization.

85397804859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10430.

The product of its (nonzero) digits is 87091200, while the sum is 66.

The spelling of 85397804859 in words is "eighty-five billion, three hundred ninety-seven million, eight hundred four thousand, eight hundred fifty-nine".