2040555609 has 24 divisors (see below), whose sum is σ = 3043203072. Its totient is φ = 1316710080.

The previous prime is 2040555593. The next prime is 2040555613. The reversal of 2040555609 is 9065550402.

2040555609 is a `hidden beast` number, since 2 + 0 + 40 + 5 + 5 + 5 + 609 = 666.

It is not a de Polignac number, because 2040555609 - 2⁴ = 2040555593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2040555659) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25092 + ... + 68634.

It is an arithmetic number, because the mean of its divisors is an integer number (126800128).

Almost surely, 2^2040555609 is an apocalyptic number.

It is an amenable number.

2040555609 is a deficient number, since it is larger than the sum of its proper divisors (1002647463).

2040555609 is a wasteful number, since it uses less digits than its factorization.

2040555609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43717 (or 43714 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The square root of 2040555609 is about 45172.5094388169. The cubic root of 2040555609 is about 1268.3802710710.

The spelling of 2040555609 in words is "two billion, forty million, five hundred fifty-five thousand, six hundred nine".