1106165204561 has 4 divisors (see below), whose sum is σ = 1116313509300. Its totient is φ = 1096016899824.

The previous prime is 1106165204513. The next prime is 1106165204569. The reversal of 1106165204561 is 1654025616011.

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 677296080400 + 428869124161 = 822980^2 + 654881^2 .

It is a cyclic number.

It is not a de Polignac number, because 1106165204561 - 2¹⁸ = 1106164942417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1106165204569) 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, 5074152206 + ... + 5074152423.

It is an arithmetic number, because the mean of its divisors is an integer number (279078377325).

Almost surely, 2^{1106165204561} is an apocalyptic number.

It is an amenable number.

1106165204561 is a deficient number, since it is larger than the sum of its proper divisors (10148304739).

1106165204561 is a wasteful number, since it uses less digits than its factorization.

1106165204561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10148304738.

The product of its (nonzero) digits is 43200, while the sum is 38.

The spelling of 1106165204561 in words is "one trillion, one hundred six billion, one hundred sixty-five million, two hundred four thousand, five hundred sixty-one".