63563509980 has 36 divisors (see below), whose sum is σ = 192809314152. Its totient is φ = 16950269280.

The previous prime is 63563509979. The next prime is 63563509991. The reversal of 63563509980 is 8990536536.

63563509980 is a `hidden beast` number, since 6 + 3 + 56 + 3 + 509 + 9 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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 11 ways as a sum of consecutive naturals, for example, 176565126 + ... + 176565485.

It is an arithmetic number, because the mean of its divisors is an integer number (5355814282).

Almost surely, 2^63563509980 is an apocalyptic number.

63563509980 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

63563509980 is an abundant number, since it is smaller than the sum of its proper divisors (129245804172).

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

63563509980 is a wasteful number, since it uses less digits than its factorization.

63563509980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353130626 (or 353130621 counting only the distinct ones).

The product of its (nonzero) digits is 5248800, while the sum is 54.

The spelling of 63563509980 in words is "sixty-three billion, five hundred sixty-three million, five hundred nine thousand, nine hundred eighty".