105505605611 has 4 divisors (see below), whose sum is σ = 120577834992. Its totient is φ = 90433376232.

The previous prime is 105505605607. The next prime is 105505605613. The reversal of 105505605611 is 116506505501.

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

It is a cyclic number.

It is not a de Polignac number, because 105505605611 - 2² = 105505605607 is a prime.

It is a super-2 number, since 2×105505605611² (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 (105505605613) 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, 7536114680 + ... + 7536114693.

It is an arithmetic number, because the mean of its divisors is an integer number (30144458748).

Almost surely, 2^105505605611 is an apocalyptic number.

105505605611 is a deficient number, since it is larger than the sum of its proper divisors (15072229381).

105505605611 is an equidigital number, since it uses as much as digits as its factorization.

105505605611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15072229380.

The product of its (nonzero) digits is 22500, while the sum is 35.

The spelling of 105505605611 in words is "one hundred five billion, five hundred five million, six hundred five thousand, six hundred eleven".