5640345171 has 32 divisors (see below), whose sum is σ = 8619013440. Its totient is φ = 3689206560.

The previous prime is 5640345163. The next prime is 5640345239. The reversal of 5640345171 is 1715430465.

5640345171 is a `hidden beast` number, since 5 + 640 + 3 + 4 + 5 + 1 + 7 + 1 = 666.

It is not a de Polignac number, because 5640345171 - 2³ = 5640345163 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (5640345671) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91581 + ... + 140241.

It is an arithmetic number, because the mean of its divisors is an integer number (269344170).

Almost surely, 2^5640345171 is an apocalyptic number.

5640345171 is a deficient number, since it is larger than the sum of its proper divisors (2978668269).

5640345171 is an frugal number, since it uses more digits than its factorization.

5640345171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48735 (or 48717 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 5640345171 is about 75102.2314648506. The cubic root of 5640345171 is about 1780.0624027064.

The spelling of 5640345171 in words is "five billion, six hundred forty million, three hundred forty-five thousand, one hundred seventy-one".