63125663928 has 128 divisors (see below), whose sum is σ = 167357836800. Its totient is φ = 19807603200.

The previous prime is 63125663927. The next prime is 63125663959. The reversal of 63125663928 is 82936652136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63125663921) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 19780813 + ... + 19784003.

It is an arithmetic number, because the mean of its divisors is an integer number (1307483100).

Almost surely, 2^63125663928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63125663928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83678918400).

63125663928 is an abundant number, since it is smaller than the sum of its proper divisors (104232172872).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63125663928 is a wasteful number, since it uses less digits than its factorization.

63125663928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3933 (or 3929 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 51.

The spelling of 63125663928 in words is "sixty-three billion, one hundred twenty-five million, six hundred sixty-three thousand, nine hundred twenty-eight".