2065543045605 has 48 divisors (see below), whose sum is σ = 3855954276720. Its totient is φ = 1016810486784.

The previous prime is 2065543045571. The next prime is 2065543045607. The reversal of 2065543045605 is 5065403455602.

2065543045605 is a `hidden beast` number, since 2 + 0 + 6 + 5 + 5 + 4 + 30 + 4 + 5 + 605 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 1162431141921 + 903111903684 = 1078161^2 + 950322^2 .

It is not a de Polignac number, because 2065543045605 - 2²⁴ = 2065526268389 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2065543045607) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8638927 + ... + 8874803.

It is an arithmetic number, because the mean of its divisors is an integer number (80332380765).

Almost surely, 2^{2065543045605} is an apocalyptic number.

It is an amenable number.

2065543045605 is a deficient number, since it is larger than the sum of its proper divisors (1790411231115).

2065543045605 is a wasteful number, since it uses less digits than its factorization.

2065543045605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250870 (or 250867 counting only the distinct ones).

The product of its (nonzero) digits is 2160000, while the sum is 45.

The spelling of 2065543045605 in words is "two trillion, sixty-five billion, five hundred forty-three million, forty-five thousand, six hundred five".