6844291645 has 16 divisors (see below), whose sum is σ = 8252257968. Its totient is φ = 5449400320.

The previous prime is 6844291591. The next prime is 6844291661. The reversal of 6844291645 is 5461924486.

It can be written as a sum of positive squares in 8 ways, for example, as 10458756 + 6833832889 = 3234^2 + 82667^2 .

It is not a de Polignac number, because 6844291645 - 2²³ = 6835903037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2873355 + ... + 2875735.

It is an arithmetic number, because the mean of its divisors is an integer number (515766123).

Almost surely, 2^6844291645 is an apocalyptic number.

It is an amenable number.

6844291645 is a deficient number, since it is larger than the sum of its proper divisors (1407966323).

6844291645 is a wasteful number, since it uses less digits than its factorization.

6844291645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4880.

The product of its digits is 1658880, while the sum is 49.

The square root of 6844291645 is about 82730.2341650258. The cubic root of 6844291645 is about 1898.6409158805.

The spelling of 6844291645 in words is "six billion, eight hundred forty-four million, two hundred ninety-one thousand, six hundred forty-five".