2185856765822 has 8 divisors (see below), whose sum is σ = 3451352788200. Its totient is φ = 1035405836424.

The previous prime is 2185856765797. The next prime is 2185856765837. The reversal of 2185856765822 is 2285676585812.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28761273197 + ... + 28761273272.

It is an arithmetic number, because the mean of its divisors is an integer number (431419098525).

Almost surely, 2^{2185856765822} is an apocalyptic number.

2185856765822 is a deficient number, since it is larger than the sum of its proper divisors (1265496022378).

2185856765822 is a wasteful number, since it uses less digits than its factorization.

2185856765822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57522546490.

The product of its digits is 129024000, while the sum is 65.

The spelling of 2185856765822 in words is "two trillion, one hundred eighty-five billion, eight hundred fifty-six million, seven hundred sixty-five thousand, eight hundred twenty-two".