63320752638 has 48 divisors (see below), whose sum is σ = 161180104176. Its totient is φ = 17712097920.

The previous prime is 63320752633. The next prime is 63320752639. The reversal of 63320752638 is 83625702336.

63320752638 is a `hidden beast` number, since 6 + 3 + 3 + 2 + 0 + 7 + 5 + 2 + 638 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 63320752593 and 63320752602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63320752631) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12297495 + ... + 12302642.

It is an arithmetic number, because the mean of its divisors is an integer number (3357918837).

Almost surely, 2^63320752638 is an apocalyptic number.

63320752638 is an abundant number, since it is smaller than the sum of its proper divisors (97859351538).

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

63320752638 is a wasteful number, since it uses less digits than its factorization.

63320752638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24600169 (or 24600166 counting only the distinct ones).

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

The spelling of 63320752638 in words is "sixty-three billion, three hundred twenty million, seven hundred fifty-two thousand, six hundred thirty-eight".