63231778008 has 256 divisors, whose sum is σ = 207688320000. Its totient is φ = 17449344000.

The previous prime is 63231777977. The next prime is 63231778021. The reversal of 63231778008 is 80087713236.

63231778008 is a `hidden beast` number, since 632 + 3 + 1 + 7 + 7 + 8 + 0 + 0 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 6256143 + ... + 6266241.

It is an arithmetic number, because the mean of its divisors is an integer number (811282500).

Almost surely, 2^63231778008 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 63231778008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103844160000).

63231778008 is an abundant number, since it is smaller than the sum of its proper divisors (144456541992).

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

63231778008 is a wasteful number, since it uses less digits than its factorization.

63231778008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10263 (or 10253 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The spelling of 63231778008 in words is "sixty-three billion, two hundred thirty-one million, seven hundred seventy-eight thousand, eight".