5663721747469 has 2 divisors, whose sum is σ = 5663721747470. Its totient is φ = 5663721747468.

The previous prime is 5663721747451. The next prime is 5663721747479. The reversal of 5663721747469 is 9647471273665.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5663495636100 + 226111369 = 2379810^2 + 15037^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5663721747469 is a prime.

It is a super-2 number, since 2×5663721747469² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5663721747479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2831860873734 + 2831860873735.

It is an arithmetic number, because the mean of its divisors is an integer number (2831860873735).

Almost surely, 2^{5663721747469} is an apocalyptic number.

It is an amenable number.

5663721747469 is a deficient number, since it is larger than the sum of its proper divisors (1).

5663721747469 is an equidigital number, since it uses as much as digits as its factorization.

5663721747469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 320060160, while the sum is 67.

The spelling of 5663721747469 in words is "five trillion, six hundred sixty-three billion, seven hundred twenty-one million, seven hundred forty-seven thousand, four hundred sixty-nine".