5640251711287 has 2 divisors, whose sum is σ = 5640251711288. Its totient is φ = 5640251711286.

The previous prime is 5640251711267. The next prime is 5640251711401. The reversal of 5640251711287 is 7821171520465.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5640251711287 - 2²⁷ = 5640117493559 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5640251711287.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5640251711267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2820125855643 + 2820125855644.

It is an arithmetic number, because the mean of its divisors is an integer number (2820125855644).

Almost surely, 2^{5640251711287} is an apocalyptic number.

5640251711287 is a deficient number, since it is larger than the sum of its proper divisors (1).

5640251711287 is an equidigital number, since it uses as much as digits as its factorization.

5640251711287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 940800, while the sum is 49.

The spelling of 5640251711287 in words is "five trillion, six hundred forty billion, two hundred fifty-one million, seven hundred eleven thousand, two hundred eighty-seven".