63408891220201 has 2 divisors, whose sum is σ = 63408891220202. Its totient is φ = 63408891220200.

The previous prime is 63408891220151. The next prime is 63408891220267. The reversal of 63408891220201 is 10202219880436.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62622611768025 + 786279452176 = 7913445^2 + 886724^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63408891220201 is a prime.

It is not a weakly prime, because it can be changed into another prime (63408291220201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31704445610100 + 31704445610101.

It is an arithmetic number, because the mean of its divisors is an integer number (31704445610101).

Almost surely, 2^{63408891220201} is an apocalyptic number.

It is an amenable number.

63408891220201 is a deficient number, since it is larger than the sum of its proper divisors (1).

63408891220201 is an equidigital number, since it uses as much as digits as its factorization.

63408891220201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 331776, while the sum is 46.

The spelling of 63408891220201 in words is "sixty-three trillion, four hundred eight billion, eight hundred ninety-one million, two hundred twenty thousand, two hundred one".