105504021443 has 16 divisors (see below), whose sum is σ = 110672513280. Its totient is φ = 100478296800.

The previous prime is 105504021421. The next prime is 105504021499. The reversal of 105504021443 is 344120405501.

It is a cyclic number.

It is not a de Polignac number, because 105504021443 - 2²⁰ = 105502972867 is a prime.

It is a super-2 number, since 2×105504021443² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105504021143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 220688 + ... + 509618.

It is an arithmetic number, because the mean of its divisors is an integer number (6917032080).

Almost surely, 2^105504021443 is an apocalyptic number.

105504021443 is a deficient number, since it is larger than the sum of its proper divisors (5168491837).

105504021443 is a wasteful number, since it uses less digits than its factorization.

105504021443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289178.

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 105504021443 its reverse (344120405501), we get a palindrome (449624426944).

The spelling of 105504021443 in words is "one hundred five billion, five hundred four million, twenty-one thousand, four hundred forty-three".