63375433128 has 512 divisors, whose sum is σ = 219901440000. Its totient is φ = 16507266048.

The previous prime is 63375433081. The next prime is 63375433207. The reversal of 63375433128 is 82133457336.

63375433128 is a `hidden beast` number, since 63 + 37 + 5 + 433 + 128 = 666.

63375433128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 115859751 + ... + 115860297.

It is an arithmetic number, because the mean of its divisors is an integer number (429495000).

Almost surely, 2^63375433128 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 63375433128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109950720000).

63375433128 is an abundant number, since it is smaller than the sum of its proper divisors (156526006872).

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

63375433128 is a wasteful number, since it uses less digits than its factorization.

63375433128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734 (or 724 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 45.

The spelling of 63375433128 in words is "sixty-three billion, three hundred seventy-five million, four hundred thirty-three thousand, one hundred twenty-eight".