5671871720 has 16 divisors (see below), whose sum is σ = 12761711460. Its totient is φ = 2268748672.

The previous prime is 5671871677. The next prime is 5671871741. The reversal of 5671871720 is 271781765.

It can be written as a sum of positive squares in 2 ways, for example, as 5006128516 + 665743204 = 70754^2 + 25802^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70898357 + ... + 70898436.

Almost surely, 2^5671871720 is an apocalyptic number.

It is an amenable number.

5671871720 is an abundant number, since it is smaller than the sum of its proper divisors (7089839740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5671871720 is a wasteful number, since it uses less digits than its factorization.

5671871720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141796804 (or 141796800 counting only the distinct ones).

The product of its (nonzero) digits is 164640, while the sum is 44.

The square root of 5671871720 is about 75311.8298808361. The cubic root of 5671871720 is about 1783.3727786619.

The spelling of 5671871720 in words is "five billion, six hundred seventy-one million, eight hundred seventy-one thousand, seven hundred twenty".