105343505506 has 4 divisors (see below), whose sum is σ = 158015258262. Its totient is φ = 52671752752.

The previous prime is 105343505503. The next prime is 105343505563. The reversal of 105343505506 is 605505343501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 605505343501 = 26249 ⋅23067749.

It can be written as a sum of positive squares in only one way, i.e., 105034976281 + 308529225 = 324091^2 + 17565^2 .

It is a super-3 number, since 3×105343505506³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (105343505503) 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 as a sum of consecutive naturals, namely, 26335876375 + ... + 26335876378.

Almost surely, 2^105343505506 is an apocalyptic number.

105343505506 is a deficient number, since it is larger than the sum of its proper divisors (52671752756).

105343505506 is an equidigital number, since it uses as much as digits as its factorization.

105343505506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52671752755.

The product of its (nonzero) digits is 135000, while the sum is 37.

The spelling of 105343505506 in words is "one hundred five billion, three hundred forty-three million, five hundred five thousand, five hundred six".