63396973888 has 14 divisors (see below), whose sum is σ = 125803370186. Its totient is φ = 31698486912.

The previous prime is 63396973867. The next prime is 63396973891. The reversal of 63396973888 is 88837969336.

It can be written as a sum of positive squares in only one way, i.e., 63226096704 + 170877184 = 251448^2 + 13072^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 495288795 + ... + 495288922.

Almost surely, 2^63396973888 is an apocalyptic number.

It is an amenable number.

63396973888 is a deficient number, since it is larger than the sum of its proper divisors (62406396298).

63396973888 is an equidigital number, since it uses as much as digits as its factorization.

63396973888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990577729 (or 990577719 counting only the distinct ones).

The product of its digits is 282175488, while the sum is 70.

The spelling of 63396973888 in words is "sixty-three billion, three hundred ninety-six million, nine hundred seventy-three thousand, eight hundred eighty-eight".