105538054009 has 4 divisors (see below), whose sum is σ = 105572762100. Its totient is φ = 105503345920.

The previous prime is 105538054001. The next prime is 105538054021. The reversal of 105538054009 is 900450835501.

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

It can be written as a sum of positive squares in 2 ways, for example, as 104072695609 + 1465358400 = 322603^2 + 38280^2 .

It is a cyclic number.

It is not a de Polignac number, because 105538054009 - 2³ = 105538054001 is a prime.

It is a super-2 number, since 2×105538054009² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105538054001) 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, 17349484 + ... + 17355565.

It is an arithmetic number, because the mean of its divisors is an integer number (26393190525).

Almost surely, 2^105538054009 is an apocalyptic number.

It is an amenable number.

105538054009 is a deficient number, since it is larger than the sum of its proper divisors (34708091).

105538054009 is an equidigital number, since it uses as much as digits as its factorization.

105538054009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34708090.

The product of its (nonzero) digits is 108000, while the sum is 40.

The spelling of 105538054009 in words is "one hundred five billion, five hundred thirty-eight million, fifty-four thousand, nine".