63708389369 has 2 divisors, whose sum is σ = 63708389370. Its totient is φ = 63708389368.

The previous prime is 63708389317. The next prime is 63708389473. The reversal of 63708389369 is 96398380736.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61481682025 + 2226707344 = 247955^2 + 47188^2 .

It is a cyclic number.

It is not a de Polignac number, because 63708389369 - 2³² = 59413422073 is a prime.

It is a super-2 number, since 2×63708389369² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (63708379369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31854194684 + 31854194685.

It is an arithmetic number, because the mean of its divisors is an integer number (31854194685).

Almost surely, 2^63708389369 is an apocalyptic number.

It is an amenable number.

63708389369 is a deficient number, since it is larger than the sum of its proper divisors (1).

63708389369 is an equidigital number, since it uses as much as digits as its factorization.

63708389369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35271936, while the sum is 62.

The spelling of 63708389369 in words is "sixty-three billion, seven hundred eight million, three hundred eighty-nine thousand, three hundred sixty-nine".