105555611109 has 8 divisors (see below), whose sum is σ = 151567031392. Its totient is φ = 64957299120.

The previous prime is 105555611107. The next prime is 105555611129. The reversal of 105555611109 is 901116555501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 105555611109 - 2¹ = 105555611107 is a prime.

It is a super-2 number, since 2×105555611109² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 2706554131 = 105555611109 / (1 + 0 + 5 + 5 + 5 + 5 + 6 + 1 + 1 + 1 + 0 + 9).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105555611107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1353277027 + ... + 1353277104.

It is an arithmetic number, because the mean of its divisors is an integer number (18945878924).

Almost surely, 2^105555611109 is an apocalyptic number.

It is an amenable number.

105555611109 is a deficient number, since it is larger than the sum of its proper divisors (46011420283).

105555611109 is a wasteful number, since it uses less digits than its factorization.

105555611109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2706554147.

The product of its (nonzero) digits is 33750, while the sum is 39.

The spelling of 105555611109 in words is "one hundred five billion, five hundred fifty-five million, six hundred eleven thousand, one hundred nine".