5663721747539 has 2 divisors, whose sum is σ = 5663721747540. Its totient is φ = 5663721747538.

The previous prime is 5663721747527. The next prime is 5663721747557. The reversal of 5663721747539 is 9357471273665.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5663721747539 - 2³² = 5659426780243 is a prime.

It is not a weakly prime, because it can be changed into another prime (5663721717539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2831860873769 + 2831860873770.

It is an arithmetic number, because the mean of its divisors is an integer number (2831860873770).

Almost surely, 2^{5663721747539} is an apocalyptic number.

5663721747539 is a deficient number, since it is larger than the sum of its proper divisors (1).

5663721747539 is an equidigital number, since it uses as much as digits as its factorization.

5663721747539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 200037600, while the sum is 65.

The spelling of 5663721747539 in words is "five trillion, six hundred sixty-three billion, seven hundred twenty-one million, seven hundred forty-seven thousand, five hundred thirty-nine".