63813308532 has 24 divisors (see below), whose sum is σ = 151338667872. Its totient is φ = 20922396000.

The previous prime is 63813308509. The next prime is 63813308551. The reversal of 63813308532 is 23580331836.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 43587594 + ... + 43589057.

It is an arithmetic number, because the mean of its divisors is an integer number (6305777828).

Almost surely, 2^63813308532 is an apocalyptic number.

It is an amenable number.

63813308532 is an abundant number, since it is smaller than the sum of its proper divisors (87525359340).

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

63813308532 is a wasteful number, since it uses less digits than its factorization.

63813308532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87176719 (or 87176717 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 42.

The spelling of 63813308532 in words is "sixty-three billion, eight hundred thirteen million, three hundred eight thousand, five hundred thirty-two".