6845669707841 has 4 divisors (see below), whose sum is σ = 6906250855812. Its totient is φ = 6785088559872.

The previous prime is 6845669707837. The next prime is 6845669707843. The reversal of 6845669707841 is 1487079665486.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3787616592400 + 3058053115441 = 1946180^2 + 1748729^2 .

It is a cyclic number.

It is not a de Polignac number, because 6845669707841 - 2² = 6845669707837 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6845669707843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30290573816 + ... + 30290574041.

It is an arithmetic number, because the mean of its divisors is an integer number (1726562713953).

Almost surely, 2^{6845669707841} is an apocalyptic number.

It is an amenable number.

6845669707841 is a deficient number, since it is larger than the sum of its proper divisors (60581147971).

6845669707841 is a wasteful number, since it uses less digits than its factorization.

6845669707841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60581147970.

The product of its (nonzero) digits is 487710720, while the sum is 71.

The spelling of 6845669707841 in words is "six trillion, eight hundred forty-five billion, six hundred sixty-nine million, seven hundred seven thousand, eight hundred forty-one".