63343632491 has 2 divisors, whose sum is σ = 63343632492. Its totient is φ = 63343632490.

The previous prime is 63343632403. The next prime is 63343632503. The reversal of 63343632491 is 19423634336.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63343632491 - 2¹⁴ = 63343616107 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (63343632791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31671816245 + 31671816246.

It is an arithmetic number, because the mean of its divisors is an integer number (31671816246).

Almost surely, 2^63343632491 is an apocalyptic number.

63343632491 is a deficient number, since it is larger than the sum of its proper divisors (1).

63343632491 is an equidigital number, since it uses as much as digits as its factorization.

63343632491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 839808, while the sum is 44.

The spelling of 63343632491 in words is "sixty-three billion, three hundred forty-three million, six hundred thirty-two thousand, four hundred ninety-one".