85871765245 has 48 divisors (see below), whose sum is σ = 122549511168. Its totient is φ = 57569890560.

The previous prime is 85871765209. The next prime is 85871765251. The reversal of 85871765245 is 54256717858.

It is a de Polignac number, because none of the positive numbers 2^k-85871765245 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85871765245.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12697665 + ... + 12704425.

It is an arithmetic number, because the mean of its divisors is an integer number (2553114816).

Almost surely, 2^85871765245 is an apocalyptic number.

It is an amenable number.

85871765245 is a deficient number, since it is larger than the sum of its proper divisors (36677745923).

85871765245 is a wasteful number, since it uses less digits than its factorization.

85871765245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7930 (or 7923 counting only the distinct ones).

The product of its digits is 18816000, while the sum is 58.

The spelling of 85871765245 in words is "eighty-five billion, eight hundred seventy-one million, seven hundred sixty-five thousand, two hundred forty-five".