63863836836 has 12 divisors (see below), whose sum is σ = 149015619312. Its totient is φ = 21287945608.

The previous prime is 63863836819. The next prime is 63863836871.

63863836836 is nontrivially palindromic in base 10.

63863836836 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 63863836836.

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, 2660993190 + ... + 2660993213.

It is an arithmetic number, because the mean of its divisors is an integer number (12417968276).

Almost surely, 2^63863836836 is an apocalyptic number.

It is an amenable number.

63863836836 is an abundant number, since it is smaller than the sum of its proper divisors (85151782476).

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

63863836836 is a wasteful number, since it uses less digits than its factorization.

63863836836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5321986410 (or 5321986408 counting only the distinct ones).

The product of its digits is 53747712, while the sum is 60.

The spelling of 63863836836 in words is "sixty-three billion, eight hundred sixty-three million, eight hundred thirty-six thousand, eight hundred thirty-six".