3811274221185 has 12 divisors (see below), whose sum is σ = 6606208650132. Its totient is φ = 2032679584608.

The previous prime is 3811274221177. The next prime is 3811274221207. The reversal of 3811274221185 is 5811224721183.

3811274221185 is a `hidden beast` number, since 3 + 81 + 1 + 274 + 221 + 1 + 85 = 666.

3811274221185 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1892140553601 + 1919133667584 = 1375551^2 + 1385328^2 .

It is not a de Polignac number, because 3811274221185 - 2³ = 3811274221177 is a prime.

It is a super-2 number, since 2×3811274221185² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 84694982693 = 3811274221185 / (3 + 8 + 1 + 1 + 2 + 7 + 4 + 2 + 2 + 1 + 1 + 8 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 3811274221185.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42347491302 + ... + 42347491391.

It is an arithmetic number, because the mean of its divisors is an integer number (550517387511).

Almost surely, 2^{3811274221185} is an apocalyptic number.

It is an amenable number.

3811274221185 is a deficient number, since it is larger than the sum of its proper divisors (2794934428947).

3811274221185 is a wasteful number, since it uses less digits than its factorization.

3811274221185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84694982704 (or 84694982701 counting only the distinct ones).

The product of its digits is 215040, while the sum is 45.

The spelling of 3811274221185 in words is "three trillion, eight hundred eleven billion, two hundred seventy-four million, two hundred twenty-one thousand, one hundred eighty-five".