85786047073 has 4 divisors (see below), whose sum is σ = 85808315668. Its totient is φ = 85763778480.

The previous prime is 85786047043. The next prime is 85786047089. The reversal of 85786047073 is 37074068758.

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

It can be written as a sum of positive squares in 2 ways, for example, as 56369680929 + 29416366144 = 237423^2 + 171512^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85786047073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85786047043) 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, 11128518 + ... + 11136223.

It is an arithmetic number, because the mean of its divisors is an integer number (21452078917).

Almost surely, 2^85786047073 is an apocalyptic number.

It is an amenable number.

85786047073 is a deficient number, since it is larger than the sum of its proper divisors (22268595).

85786047073 is a wasteful number, since it uses less digits than its factorization.

85786047073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22268594.

The product of its (nonzero) digits is 7902720, while the sum is 55.

The spelling of 85786047073 in words is "eighty-five billion, seven hundred eighty-six million, forty-seven thousand, seventy-three".