63381638111 has 12 divisors (see below), whose sum is σ = 69915384672. Its totient is φ = 57414588000.

The previous prime is 63381638107. The next prime is 63381638179. The reversal of 63381638111 is 11183618336.

It is not a de Polignac number, because 63381638111 - 2² = 63381638107 is a prime.

It is a super-3 number, since 3×63381638111³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63381638191) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 898055 + ... + 966056.

It is an arithmetic number, because the mean of its divisors is an integer number (5826282056).

Almost surely, 2^63381638111 is an apocalyptic number.

63381638111 is a deficient number, since it is larger than the sum of its proper divisors (6533746561).

63381638111 is a wasteful number, since it uses less digits than its factorization.

63381638111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1864414 (or 1864403 counting only the distinct ones).

The product of its digits is 62208, while the sum is 41.

The spelling of 63381638111 in words is "sixty-three billion, three hundred eighty-one million, six hundred thirty-eight thousand, one hundred eleven".