63779756329 has 2 divisors, whose sum is σ = 63779756330. Its totient is φ = 63779756328.

The previous prime is 63779756279. The next prime is 63779756413. The reversal of 63779756329 is 92365797736.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63635107600 + 144648729 = 252260^2 + 12027^2 .

It is a cyclic number.

It is not a de Polignac number, because 63779756329 - 2¹⁵ = 63779723561 is a prime.

It is not a weakly prime, because it can be changed into another prime (63779756629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31889878164 + 31889878165.

It is an arithmetic number, because the mean of its divisors is an integer number (31889878165).

Almost surely, 2^63779756329 is an apocalyptic number.

It is an amenable number.

63779756329 is a deficient number, since it is larger than the sum of its proper divisors (1).

63779756329 is an equidigital number, since it uses as much as digits as its factorization.

63779756329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90016920, while the sum is 64.

The spelling of 63779756329 in words is "sixty-three billion, seven hundred seventy-nine million, seven hundred fifty-six thousand, three hundred twenty-nine".