105869755209 has 4 divisors (see below), whose sum is σ = 141159673616. Its totient is φ = 70579836804.

The previous prime is 105869755181. The next prime is 105869755217. The reversal of 105869755209 is 902557968501.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 105869755209 - 2⁸ = 105869754953 is a prime.

It is a super-2 number, since 2×105869755209² (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 (105869755259) 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, 17644959199 + ... + 17644959204.

It is an arithmetic number, because the mean of its divisors is an integer number (35289918404).

Almost surely, 2^105869755209 is an apocalyptic number.

It is an amenable number.

105869755209 is a deficient number, since it is larger than the sum of its proper divisors (35289918407).

105869755209 is an equidigital number, since it uses as much as digits as its factorization.

105869755209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35289918406.

The product of its (nonzero) digits is 6804000, while the sum is 57.

The spelling of 105869755209 in words is "one hundred five billion, eight hundred sixty-nine million, seven hundred fifty-five thousand, two hundred nine".