63504640536 has 32 divisors (see below), whose sum is σ = 159394132800. Its totient is φ = 21083876000.

The previous prime is 63504640523. The next prime is 63504640571.

It is a happy number.

63504640536 is nontrivially palindromic in base 10.

63504640536 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5264946 + ... + 5276993.

It is an arithmetic number, because the mean of its divisors is an integer number (4981066650).

Almost surely, 2^63504640536 is an apocalyptic number.

It is an amenable number.

63504640536 is an abundant number, since it is smaller than the sum of its proper divisors (95889492264).

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

63504640536 is a wasteful number, since it uses less digits than its factorization.

63504640536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10542199 (or 10542195 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 42.

The spelling of 63504640536 in words is "sixty-three billion, five hundred four million, six hundred forty thousand, five hundred thirty-six".