5640636297271 has 4 divisors (see below), whose sum is σ = 5640884053200. Its totient is φ = 5640388541344.

The previous prime is 5640636297253. The next prime is 5640636297277. The reversal of 5640636297271 is 1727926360465.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5640636297271 - 2¹⁷ = 5640636166199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5640636297277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123843811 + ... + 123889348.

It is an arithmetic number, because the mean of its divisors is an integer number (1410221013300).

Almost surely, 2^{5640636297271} is an apocalyptic number.

5640636297271 is a deficient number, since it is larger than the sum of its proper divisors (247755929).

5640636297271 is a wasteful number, since it uses less digits than its factorization.

5640636297271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247755928.

The product of its (nonzero) digits is 22861440, while the sum is 58.

The spelling of 5640636297271 in words is "five trillion, six hundred forty billion, six hundred thirty-six million, two hundred ninety-seven thousand, two hundred seventy-one".