6845669707837 has 2 divisors, whose sum is σ = 6845669707838. Its totient is φ = 6845669707836.

The previous prime is 6845669707823. The next prime is 6845669707843. The reversal of 6845669707837 is 7387079665486.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4200577319961 + 2645092387876 = 2049531^2 + 1626374^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6845669707837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6845669707237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3422834853918 + 3422834853919.

It is an arithmetic number, because the mean of its divisors is an integer number (3422834853919).

Almost surely, 2^{6845669707837} is an apocalyptic number.

It is an amenable number.

6845669707837 is a deficient number, since it is larger than the sum of its proper divisors (1).

6845669707837 is an equidigital number, since it uses as much as digits as its factorization.

6845669707837 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2560481280, while the sum is 76.

The spelling of 6845669707837 in words is "six trillion, eight hundred forty-five billion, six hundred sixty-nine million, seven hundred seven thousand, eight hundred thirty-seven".