6681271863 has 48 divisors (see below), whose sum is σ = 10857805056. Its totient is φ = 3636864000.

The previous prime is 6681271859. The next prime is 6681271873. The reversal of 6681271863 is 3681721866.

It is not a de Polignac number, because 6681271863 - 2² = 6681271859 is a prime.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6681271873) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 844695 + ... + 852567.

It is an arithmetic number, because the mean of its divisors is an integer number (226204272).

Almost surely, 2^6681271863 is an apocalyptic number.

6681271863 is a deficient number, since it is larger than the sum of its proper divisors (4176533193).

6681271863 is a wasteful number, since it uses less digits than its factorization.

6681271863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8164 (or 8157 counting only the distinct ones).

The product of its digits is 580608, while the sum is 48.

The square root of 6681271863 is about 81739.0473580406. The cubic root of 6681271863 is about 1883.4454569074.

The spelling of 6681271863 in words is "six billion, six hundred eighty-one million, two hundred seventy-one thousand, eight hundred sixty-three".