63698289636 has 12 divisors (see below), whose sum is σ = 148629342512. Its totient is φ = 21232763208.

The previous prime is 63698289607. The next prime is 63698289649.

63698289636 is nontrivially palindromic in base 10.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2654095390 + ... + 2654095413.

Almost surely, 2^63698289636 is an apocalyptic number.

It is an amenable number.

63698289636 is an abundant number, since it is smaller than the sum of its proper divisors (84931052876).

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

63698289636 is a wasteful number, since it uses less digits than its factorization.

63698289636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5308190810 (or 5308190808 counting only the distinct ones).

The product of its digits is 120932352, while the sum is 66.

The spelling of 63698289636 in words is "sixty-three billion, six hundred ninety-eight million, two hundred eighty-nine thousand, six hundred thirty-six".