63033797888 has 72 divisors (see below), whose sum is σ = 133680016008. Its totient is φ = 29561126912.

The previous prime is 63033797863. The next prime is 63033797891. The reversal of 63033797888 is 88879733036.

It can be written as a sum of positive squares in 4 ways, for example, as 38837373184 + 24196424704 = 197072^2 + 155552^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 63033797888.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 1250420 + ... + 1299852.

It is an arithmetic number, because the mean of its divisors is an integer number (1856666889).

Almost surely, 2^63033797888 is an apocalyptic number.

63033797888 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63033797888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66840008004).

63033797888 is an abundant number, since it is smaller than the sum of its proper divisors (70646218120).

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

63033797888 is a wasteful number, since it uses less digits than its factorization.

63033797888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49759 (or 49745 counting only the distinct ones).

The product of its (nonzero) digits is 36578304, while the sum is 62.

The spelling of 63033797888 in words is "sixty-three billion, thirty-three million, seven hundred ninety-seven thousand, eight hundred eighty-eight".