111640880663 has 12 divisors (see below), whose sum is σ = 124156521288. Its totient is φ = 100267895520.

The previous prime is 111640880647. The next prime is 111640880677. The reversal of 111640880663 is 366088046111.

It is not a de Polignac number, because 111640880663 - 2⁴ = 111640880647 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 (111640880623) 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, 8920733 + ... + 8933238.

It is an arithmetic number, because the mean of its divisors is an integer number (10346376774).

Almost surely, 2^111640880663 is an apocalyptic number.

111640880663 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

111640880663 is a deficient number, since it is larger than the sum of its proper divisors (12515640625).

111640880663 is a wasteful number, since it uses less digits than its factorization.

111640880663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17854034 (or 17854021 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 44.

The spelling of 111640880663 in words is "one hundred eleven billion, six hundred forty million, eight hundred eighty thousand, six hundred sixty-three".