63936313549 has 2 divisors, whose sum is σ = 63936313550. Its totient is φ = 63936313548.

The previous prime is 63936313517. The next prime is 63936313561. The reversal of 63936313549 is 94531363936.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48788857924 + 15147455625 = 220882^2 + 123075^2 .

It is a cyclic number.

It is not a de Polignac number, because 63936313549 - 2⁵ = 63936313517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 63936313496 and 63936313505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63936373549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31968156774 + 31968156775.

It is an arithmetic number, because the mean of its divisors is an integer number (31968156775).

Almost surely, 2^63936313549 is an apocalyptic number.

It is an amenable number.

63936313549 is a deficient number, since it is larger than the sum of its proper divisors (1).

63936313549 is an equidigital number, since it uses as much as digits as its factorization.

63936313549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4723920, while the sum is 52.

The spelling of 63936313549 in words is "sixty-three billion, nine hundred thirty-six million, three hundred thirteen thousand, five hundred forty-nine".