63881418836 has 12 divisors (see below), whose sum is σ = 111794994528. Its totient is φ = 31939991832.

The previous prime is 63881418833. The next prime is 63881418851.

63881418836 is nontrivially palindromic in base 10.

63881418836 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 not an unprimeable number, because it can be changed into a prime (63881418833) 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, 54905 + ... + 361631.

It is an arithmetic number, because the mean of its divisors is an integer number (9316249544).

Almost surely, 2^63881418836 is an apocalyptic number.

It is an amenable number.

63881418836 is a deficient number, since it is larger than the sum of its proper divisors (47913575692).

63881418836 is a wasteful number, since it uses less digits than its factorization.

63881418836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358798 (or 358796 counting only the distinct ones).

The product of its digits is 5308416, while the sum is 56.

The spelling of 63881418836 in words is "sixty-three billion, eight hundred eighty-one million, four hundred eighteen thousand, eight hundred thirty-six".