5681444847 has 16 divisors (see below), whose sum is σ = 8587340160. Its totient is φ = 3312258912.

The previous prime is 5681444837. The next prime is 5681444893. The reversal of 5681444847 is 7484441865.

It is not a de Polignac number, because 5681444847 - 2¹⁴ = 5681428463 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5681444847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5681444807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3832893 + ... + 3834374.

It is an arithmetic number, because the mean of its divisors is an integer number (536708760).

Almost surely, 2^5681444847 is an apocalyptic number.

5681444847 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

5681444847 is a deficient number, since it is larger than the sum of its proper divisors (2905895313).

5681444847 is a wasteful number, since it uses less digits than its factorization.

5681444847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7667302.

The product of its digits is 3440640, while the sum is 51.

The square root of 5681444847 is about 75375.3596807339. The cubic root of 5681444847 is about 1784.3755551016.

The spelling of 5681444847 in words is "five billion, six hundred eighty-one million, four hundred forty-four thousand, eight hundred forty-seven".