63539606880 has 72 divisors (see below), whose sum is σ = 216828913392. Its totient is φ = 16943894784.

The previous prime is 63539606843. The next prime is 63539606891. The reversal of 63539606880 is 8860693536.

It is a tau number, because it is divible by the number of its divisors (72).

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 11 ways as a sum of consecutive naturals, for example, 22060924 + ... + 22063803.

It is an arithmetic number, because the mean of its divisors is an integer number (3011512686).

Almost surely, 2^63539606880 is an apocalyptic number.

63539606880 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

63539606880 is an abundant number, since it is smaller than the sum of its proper divisors (153289306512).

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

63539606880 is a wasteful number, since it uses less digits than its factorization.

63539606880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44124748 (or 44124737 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 54.

The spelling of 63539606880 in words is "sixty-three billion, five hundred thirty-nine million, six hundred six thousand, eight hundred eighty".