63898689836 has 12 divisors (see below), whose sum is σ = 111839822640. Its totient is φ = 31944454800.

The previous prime is 63898689797. The next prime is 63898689889.

63898689836 is nontrivially palindromic in base 10.

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, 1193051 + ... + 1245458.

It is an arithmetic number, because the mean of its divisors is an integer number (9319985220).

Almost surely, 2^63898689836 is an apocalyptic number.

It is an amenable number.

63898689836 is a deficient number, since it is larger than the sum of its proper divisors (47941132804).

63898689836 is a wasteful number, since it uses less digits than its factorization.

63898689836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2445064 (or 2445062 counting only the distinct ones).

The product of its digits is 644972544, while the sum is 74.

The spelling of 63898689836 in words is "sixty-three billion, eight hundred ninety-eight million, six hundred eighty-nine thousand, eight hundred thirty-six".