85249422837 has 16 divisors (see below), whose sum is σ = 126300760000. Its totient is φ = 56830555152.

The previous prime is 85249422821. The next prime is 85249422847. The reversal of 85249422837 is 73822494258.

85249422837 is a `hidden beast` number, since 8 + 52 + 494 + 22 + 83 + 7 = 666.

It is not a de Polignac number, because 85249422837 - 2⁴ = 85249422821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85249422847) 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, 784614 + ... + 886632.

It is an arithmetic number, because the mean of its divisors is an integer number (7893797500).

Almost surely, 2^85249422837 is an apocalyptic number.

It is an amenable number.

85249422837 is a deficient number, since it is larger than the sum of its proper divisors (41051337163).

85249422837 is a wasteful number, since it uses less digits than its factorization.

85249422837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132977 (or 132971 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 54.

The spelling of 85249422837 in words is "eighty-five billion, two hundred forty-nine million, four hundred twenty-two thousand, eight hundred thirty-seven".