63881880185111 has 12 divisors (see below), whose sum is σ = 69642803248200. Its totient is φ = 58432790572128.

The previous prime is 63881880185077. The next prime is 63881880185131. The reversal of 63881880185111 is 11158108818836.

It is a de Polignac number, because none of the positive numbers 2^k-63881880185111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63881880185131) 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, 1998916376 + ... + 1998948333.

It is an arithmetic number, because the mean of its divisors is an integer number (5803566937350).

Almost surely, 2^{63881880185111} is an apocalyptic number.

63881880185111 is a deficient number, since it is larger than the sum of its proper divisors (5760923063089).

63881880185111 is a wasteful number, since it uses less digits than its factorization.

63881880185111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3997864786 (or 3997864757 counting only the distinct ones).

The product of its (nonzero) digits is 2949120, while the sum is 59.

The spelling of 63881880185111 in words is "sixty-three trillion, eight hundred eighty-one billion, eight hundred eighty million, one hundred eighty-five thousand, one hundred eleven".