63543806980 has 12 divisors (see below), whose sum is σ = 133441994700. Its totient is φ = 25417522784.

The previous prime is 63543806927. The next prime is 63543806981. The reversal of 63543806980 is 8960834536.

It can be written as a sum of positive squares in 2 ways, for example, as 24059732544 + 39484074436 = 155112^2 + 198706^2 .

It is a super-2 number, since 2×63543806980² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (63543806981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1588595155 + ... + 1588595194.

It is an arithmetic number, because the mean of its divisors is an integer number (11120166225).

Almost surely, 2^63543806980 is an apocalyptic number.

It is an amenable number.

63543806980 is an abundant number, since it is smaller than the sum of its proper divisors (69898187720).

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

63543806980 is a wasteful number, since it uses less digits than its factorization.

63543806980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3177190358 (or 3177190356 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 52.

The spelling of 63543806980 in words is "sixty-three billion, five hundred forty-three million, eight hundred six thousand, nine hundred eighty".