63436063217 has 2 divisors, whose sum is σ = 63436063218. Its totient is φ = 63436063216.

The previous prime is 63436063199. The next prime is 63436063279. The reversal of 63436063217 is 71236063436.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33471068401 + 29964994816 = 182951^2 + 173104^2 .

It is a cyclic number.

It is not a de Polignac number, because 63436063217 - 2²⁰ = 63435014641 is a prime.

It is not a weakly prime, because it can be changed into another prime (63436063417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31718031608 + 31718031609.

It is an arithmetic number, because the mean of its divisors is an integer number (31718031609).

Almost surely, 2^63436063217 is an apocalyptic number.

It is an amenable number.

63436063217 is a deficient number, since it is larger than the sum of its proper divisors (1).

63436063217 is an equidigital number, since it uses as much as digits as its factorization.

63436063217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 41.

The spelling of 63436063217 in words is "sixty-three billion, four hundred thirty-six million, sixty-three thousand, two hundred seventeen".