6845522018138 has 8 divisors (see below), whose sum is σ = 10275349984788. Its totient is φ = 3420405356544.

The previous prime is 6845522018113. The next prime is 6845522018171. The reversal of 6845522018138 is 8318102255486.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6589422258169 + 256099759969 = 2566987^2 + 506063^2 .

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

It is a super-2 number, since 2×6845522018138² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6845522018138.

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, 1177822631 + ... + 1177828442.

Almost surely, 2^{6845522018138} is an apocalyptic number.

6845522018138 is a deficient number, since it is larger than the sum of its proper divisors (3429827966650).

6845522018138 is a wasteful number, since it uses less digits than its factorization.

6845522018138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2355652528.

The product of its (nonzero) digits is 3686400, while the sum is 53.

The spelling of 6845522018138 in words is "six trillion, eight hundred forty-five billion, five hundred twenty-two million, eighteen thousand, one hundred thirty-eight".