63475187328 has 640 divisors, whose sum is σ = 226065945600. Its totient is φ = 17298800640.

The previous prime is 63475187323. The next prime is 63475187353. The reversal of 63475187328 is 82378157436.

It is a happy number.

63475187328 is a `hidden beast` number, since 6 + 34 + 7 + 518 + 73 + 28 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (63475187323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 200237026 + ... + 200237342.

It is an arithmetic number, because the mean of its divisors is an integer number (353228040).

Almost surely, 2^63475187328 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 63475187328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113032972800).

63475187328 is an abundant number, since it is smaller than the sum of its proper divisors (162590758272).

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

63475187328 is a wasteful number, since it uses less digits than its factorization.

63475187328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470 (or 449 counting only the distinct ones).

The product of its digits is 6773760, while the sum is 54.

The spelling of 63475187328 in words is "sixty-three billion, four hundred seventy-five million, one hundred eighty-seven thousand, three hundred twenty-eight".