563662991993 has 2 divisors, whose sum is σ = 563662991994. Its totient is φ = 563662991992.

The previous prime is 563662991971. The next prime is 563662992017. The reversal of 563662991993 is 399199266365.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 563645082169 + 17909824 = 750763^2 + 4232^2 .

It is a cyclic number.

It is not a de Polignac number, because 563662991993 - 2¹⁸ = 563662729849 is a prime.

It is a super-2 number, since 2×563662991993² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (563662991963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 281831495996 + 281831495997.

It is an arithmetic number, because the mean of its divisors is an integer number (281831495997).

Almost surely, 2^563662991993 is an apocalyptic number.

It is an amenable number.

563662991993 is a deficient number, since it is larger than the sum of its proper divisors (1).

563662991993 is an equidigital number, since it uses as much as digits as its factorization.

563662991993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127545840, while the sum is 68.

The spelling of 563662991993 in words is "five hundred sixty-three billion, six hundred sixty-two million, nine hundred ninety-one thousand, nine hundred ninety-three".