105605234443 has 4 divisors (see below), whose sum is σ = 107181432040. Its totient is φ = 104029036848.

The previous prime is 105605234417. The next prime is 105605234453. The reversal of 105605234443 is 344432506501.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 105605234443 - 2²¹ = 105603137291 is a prime.

It is a super-3 number, since 3×105605234443³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105605234453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 788098698 + ... + 788098831.

It is an arithmetic number, because the mean of its divisors is an integer number (26795358010).

Almost surely, 2^105605234443 is an apocalyptic number.

105605234443 is a deficient number, since it is larger than the sum of its proper divisors (1576197597).

105605234443 is an equidigital number, since it uses as much as digits as its factorization.

105605234443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1576197596.

The product of its (nonzero) digits is 172800, while the sum is 37.

The spelling of 105605234443 in words is "one hundred five billion, six hundred five million, two hundred thirty-four thousand, four hundred forty-three".