63501243061 has 2 divisors, whose sum is σ = 63501243062. Its totient is φ = 63501243060.

The previous prime is 63501243059. The next prime is 63501243083. The reversal of 63501243061 is 16034210536.

63501243061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37135602436 + 26365640625 = 192706^2 + 162375^2 .

It is a cyclic number.

It is not a de Polignac number, because 63501243061 - 2¹ = 63501243059 is a prime.

Together with 63501243059, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63501243041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31750621530 + 31750621531.

It is an arithmetic number, because the mean of its divisors is an integer number (31750621531).

Almost surely, 2^63501243061 is an apocalyptic number.

It is an amenable number.

63501243061 is a deficient number, since it is larger than the sum of its proper divisors (1).

63501243061 is an equidigital number, since it uses as much as digits as its factorization.

63501243061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 31.

Adding to 63501243061 its reverse (16034210536), we get a palindrome (79535453597).

The spelling of 63501243061 in words is "sixty-three billion, five hundred one million, two hundred forty-three thousand, sixty-one".