63661320677327 has 2 divisors, whose sum is σ = 63661320677328. Its totient is φ = 63661320677326.

The previous prime is 63661320677293. The next prime is 63661320677347. The reversal of 63661320677327 is 72377602316636.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63661320677327 - 2¹⁸ = 63661320415183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63661320677347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31830660338663 + 31830660338664.

It is an arithmetic number, because the mean of its divisors is an integer number (31830660338664).

Almost surely, 2^{63661320677327} is an apocalyptic number.

63661320677327 is a deficient number, since it is larger than the sum of its proper divisors (1).

63661320677327 is an equidigital number, since it uses as much as digits as its factorization.

63661320677327 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48009024, while the sum is 59.

The spelling of 63661320677327 in words is "sixty-three trillion, six hundred sixty-one billion, three hundred twenty million, six hundred seventy-seven thousand, three hundred twenty-seven".