63938893875 has 16 divisors (see below), whose sum is σ = 106394320032. Its totient is φ = 34100743200.

The previous prime is 63938893801. The next prime is 63938893891. The reversal of 63938893875 is 57839883936.

It is not a de Polignac number, because 63938893875 - 2⁸ = 63938893619 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85251484 + ... + 85252233.

It is an arithmetic number, because the mean of its divisors is an integer number (6649645002).

Almost surely, 2^63938893875 is an apocalyptic number.

63938893875 is a deficient number, since it is larger than the sum of its proper divisors (42455426157).

63938893875 is a wasteful number, since it uses less digits than its factorization.

63938893875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170503735 (or 170503725 counting only the distinct ones).

The product of its digits is 235146240, while the sum is 69.

The spelling of 63938893875 in words is "sixty-three billion, nine hundred thirty-eight million, eight hundred ninety-three thousand, eight hundred seventy-five".