63989730263 has 2 divisors, whose sum is σ = 63989730264. Its totient is φ = 63989730262.

The previous prime is 63989730239. The next prime is 63989730293. The reversal of 63989730263 is 36203798936.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63989730263 - 2¹⁰ = 63989729239 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 63989730199 and 63989730208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63989730293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31994865131 + 31994865132.

It is an arithmetic number, because the mean of its divisors is an integer number (31994865132).

Almost surely, 2^63989730263 is an apocalyptic number.

63989730263 is a deficient number, since it is larger than the sum of its proper divisors (1).

63989730263 is an equidigital number, since it uses as much as digits as its factorization.

63989730263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8817984, while the sum is 56.

The spelling of 63989730263 in words is "sixty-three billion, nine hundred eighty-nine million, seven hundred thirty thousand, two hundred sixty-three".