63613352261 has 2 divisors, whose sum is σ = 63613352262. Its totient is φ = 63613352260.

The previous prime is 63613352233. The next prime is 63613352269. The reversal of 63613352261 is 16225331636.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58920280225 + 4693072036 = 242735^2 + 68506^2 .

It is a cyclic number.

It is not a de Polignac number, because 63613352261 - 2¹⁰ = 63613351237 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63613352269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31806676130 + 31806676131.

It is an arithmetic number, because the mean of its divisors is an integer number (31806676131).

Almost surely, 2^63613352261 is an apocalyptic number.

It is an amenable number.

63613352261 is a deficient number, since it is larger than the sum of its proper divisors (1).

63613352261 is an equidigital number, since it uses as much as digits as its factorization.

63613352261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 38.

Adding to 63613352261 its reverse (16225331636), we get a palindrome (79838683897).

The spelling of 63613352261 in words is "sixty-three billion, six hundred thirteen million, three hundred fifty-two thousand, two hundred sixty-one".