5640345252727 has 2 divisors, whose sum is σ = 5640345252728. Its totient is φ = 5640345252726.

The previous prime is 5640345252667. The next prime is 5640345252757. The reversal of 5640345252727 is 7272525430465.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5640345252727 - 2²³ = 5640336864119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5640345252757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2820172626363 + 2820172626364.

It is an arithmetic number, because the mean of its divisors is an integer number (2820172626364).

Almost surely, 2^{5640345252727} is an apocalyptic number.

5640345252727 is a deficient number, since it is larger than the sum of its proper divisors (1).

5640345252727 is an equidigital number, since it uses as much as digits as its factorization.

5640345252727 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112000, while the sum is 52.

The spelling of 5640345252727 in words is "five trillion, six hundred forty billion, three hundred forty-five million, two hundred fifty-two thousand, seven hundred twenty-seven".