2105565345103 has 16 divisors (see below), whose sum is σ = 2304699355296. Its totient is φ = 1907719856640.

The previous prime is 2105565345089. The next prime is 2105565345127. The reversal of 2105565345103 is 3015435655012.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2105565345103 - 2²⁹ = 2105028474191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105565345703) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22239301 + ... + 22333777.

It is an arithmetic number, because the mean of its divisors is an integer number (144043709706).

Almost surely, 2^{2105565345103} is an apocalyptic number.

2105565345103 is a deficient number, since it is larger than the sum of its proper divisors (199134010193).

2105565345103 is a wasteful number, since it uses less digits than its factorization.

2105565345103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101274.

The product of its (nonzero) digits is 270000, while the sum is 40.

The spelling of 2105565345103 in words is "two trillion, one hundred five billion, five hundred sixty-five million, three hundred forty-five thousand, one hundred three".