63505285241 has 2 divisors, whose sum is σ = 63505285242. Its totient is φ = 63505285240.

The previous prime is 63505285231. The next prime is 63505285243. The reversal of 63505285241 is 14258250536.

63505285241 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40957259641 + 22548025600 = 202379^2 + 150160^2 .

It is a cyclic number.

It is not a de Polignac number, because 63505285241 - 2⁶ = 63505285177 is a prime.

It is a Sophie Germain prime.

Together with 63505285243, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (63505285243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31752642620 + 31752642621.

It is an arithmetic number, because the mean of its divisors is an integer number (31752642621).

Almost surely, 2^63505285241 is an apocalyptic number.

It is an amenable number.

63505285241 is a deficient number, since it is larger than the sum of its proper divisors (1).

63505285241 is an equidigital number, since it uses as much as digits as its factorization.

63505285241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288000, while the sum is 41.

The spelling of 63505285241 in words is "sixty-three billion, five hundred five million, two hundred eighty-five thousand, two hundred forty-one".