111671731523868 has 96 divisors (see below), whose sum is σ = 271338710630400. Its totient is φ = 35702922264576.

The previous prime is 111671731523843. The next prime is 111671731523927. The reversal of 111671731523868 is 868325137176111.

111671731523868 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31121893 + ... + 34524131.

It is an arithmetic number, because the mean of its divisors is an integer number (2826444902400).

Almost surely, 2^{111671731523868} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111671731523868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135669355315200).

111671731523868 is an abundant number, since it is smaller than the sum of its proper divisors (159666979106532).

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

111671731523868 is a wasteful number, since it uses less digits than its factorization.

111671731523868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3402899 (or 3402897 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 60.

Adding to 111671731523868 its reverse (868325137176111), we get a palindrome (979996868699979).

The spelling of 111671731523868 in words is "one hundred eleven trillion, six hundred seventy-one billion, seven hundred thirty-one million, five hundred twenty-three thousand, eight hundred sixty-eight".