6681648159 has 12 divisors (see below), whose sum is σ = 10218991536. Its totient is φ = 4192406592.

The previous prime is 6681648157. The next prime is 6681648161. The reversal of 6681648159 is 9518461866.

It is an interprime number because it is at equal distance from previous prime (6681648157) and next prime (6681648161).

It is not a de Polignac number, because 6681648159 - 2¹ = 6681648157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6681648157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21835299 + ... + 21835604.

It is an arithmetic number, because the mean of its divisors is an integer number (851582628).

Almost surely, 2^6681648159 is an apocalyptic number.

6681648159 is a deficient number, since it is larger than the sum of its proper divisors (3537343377).

6681648159 is a wasteful number, since it uses less digits than its factorization.

6681648159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43670926 (or 43670923 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 54.

The square root of 6681648159 is about 81741.3491386092. The cubic root of 6681648159 is about 1883.4808154290.

The spelling of 6681648159 in words is "six billion, six hundred eighty-one million, six hundred forty-eight thousand, one hundred fifty-nine".