63533939888 has 20 divisors (see below), whose sum is σ = 123103807608. Its totient is φ = 31765215360.

The previous prime is 63533939881. The next prime is 63533939891. The reversal of 63533939888 is 88893933536.

It is a super-4 number, since 4×63533939888⁴ (a number of 44 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (63533939881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218903 + ... + 418313.

Almost surely, 2^63533939888 is an apocalyptic number.

It is an amenable number.

63533939888 is a deficient number, since it is larger than the sum of its proper divisors (59569867720).

63533939888 is a wasteful number, since it uses less digits than its factorization.

63533939888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219332 (or 219326 counting only the distinct ones).

The product of its digits is 100776960, while the sum is 65.

The spelling of 63533939888 in words is "sixty-three billion, five hundred thirty-three million, nine hundred thirty-nine thousand, eight hundred eighty-eight".