63443957980 has 48 divisors (see below), whose sum is σ = 144340217280. Its totient is φ = 23285173248.

The previous prime is 63443957933. The next prime is 63443957987. The reversal of 63443957980 is 8975934436.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63443957987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 687165 + ... + 774004.

It is an arithmetic number, because the mean of its divisors is an integer number (3007087860).

Almost surely, 2^63443957980 is an apocalyptic number.

It is an amenable number.

63443957980 is an abundant number, since it is smaller than the sum of its proper divisors (80896259300).

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

63443957980 is a wasteful number, since it uses less digits than its factorization.

63443957980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1461358 (or 1461356 counting only the distinct ones).

The product of its (nonzero) digits is 19595520, while the sum is 58.

The spelling of 63443957980 in words is "sixty-three billion, four hundred forty-three million, nine hundred fifty-seven thousand, nine hundred eighty".