63243805699 has 2 divisors, whose sum is σ = 63243805700. Its totient is φ = 63243805698.

The previous prime is 63243805661. The next prime is 63243805721. The reversal of 63243805699 is 99650834236.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63243805699 is a prime.

It is not a weakly prime, because it can be changed into another prime (63243805609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31621902849 + 31621902850.

It is an arithmetic number, because the mean of its divisors is an integer number (31621902850).

Almost surely, 2^63243805699 is an apocalyptic number.

63243805699 is a deficient number, since it is larger than the sum of its proper divisors (1).

63243805699 is an equidigital number, since it uses as much as digits as its factorization.

63243805699 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8398080, while the sum is 55.

The spelling of 63243805699 in words is "sixty-three billion, two hundred forty-three million, eight hundred five thousand, six hundred ninety-nine".