5671643871 has 16 divisors (see below), whose sum is σ = 7583393664. Its totient is φ = 3770512224.

The previous prime is 5671643839. The next prime is 5671643881. The reversal of 5671643871 is 1783461765.

5671643871 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 5671643871 - 2⁵ = 5671643839 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5671643871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5671643881) 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, 2288485 + ... + 2290961.

It is an arithmetic number, because the mean of its divisors is an integer number (473962104).

Almost surely, 2^5671643871 is an apocalyptic number.

5671643871 is a deficient number, since it is larger than the sum of its proper divisors (1911749793).

5671643871 is a wasteful number, since it uses less digits than its factorization.

5671643871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4310.

The product of its digits is 846720, while the sum is 48.

The square root of 5671643871 is about 75310.3171617276. The cubic root of 5671643871 is about 1783.3488979416.

The spelling of 5671643871 in words is "five billion, six hundred seventy-one million, six hundred forty-three thousand, eight hundred seventy-one".