63644650332 has 24 divisors (see below), whose sum is σ = 148607424000. Its totient is φ = 21200134896.

The previous prime is 63644650331. The next prime is 63644650339. The reversal of 63644650332 is 23305644636.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63644650331) by changing a digit.

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, 1825582 + ... + 1860117.

It is an arithmetic number, because the mean of its divisors is an integer number (6191976000).

Almost surely, 2^63644650332 is an apocalyptic number.

It is an amenable number.

63644650332 is an abundant number, since it is smaller than the sum of its proper divisors (84962773668).

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

63644650332 is a wasteful number, since it uses less digits than its factorization.

63644650332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3687145 (or 3687143 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 42.

The spelling of 63644650332 in words is "sixty-three billion, six hundred forty-four million, six hundred fifty thousand, three hundred thirty-two".