105811743183721 has 16 divisors (see below), whose sum is σ = 107316475934976. Its totient is φ = 104316084000000.

The previous prime is 105811743183659. The next prime is 105811743183733. The reversal of 105811743183721 is 127381347118501.

It is a cyclic number.

It is not a de Polignac number, because 105811743183721 - 2¹¹ = 105811743181673 is a prime.

It is a super-2 number, since 2×105811743183721² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105811743183521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193261926 + ... + 193808656.

It is an arithmetic number, because the mean of its divisors is an integer number (6707279745936).

Almost surely, 2^{105811743183721} is an apocalyptic number.

It is an amenable number.

105811743183721 is a deficient number, since it is larger than the sum of its proper divisors (1504732751255).

105811743183721 is a wasteful number, since it uses less digits than its factorization.

105811743183721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555024.

The product of its (nonzero) digits is 1128960, while the sum is 52.

The spelling of 105811743183721 in words is "one hundred five trillion, eight hundred eleven billion, seven hundred forty-three million, one hundred eighty-three thousand, seven hundred twenty-one".