2040317989609 has 9 divisors (see below), whose sum is σ = 2044091634181. Its totient is φ = 2036551306720.

The previous prime is 2040317989597. The next prime is 2040317989627. The reversal of 2040317989609 is 9069897130402.

The square root of 2040317989609 is 1428397.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 663516139225 + 1376801850384 = 814565^2 + 1173372^2 .

It is not a de Polignac number, because 2040317989609 - 2⁷ = 2040317989481 is a prime.

It is a super-2 number, since 2×2040317989609² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2040317989309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1087009179 + ... + 1087011055.

Almost surely, 2^{2040317989609} is an apocalyptic number.

2040317989609 is the 1428397-th square number.

2040317989609 is the 714199-th centered octagonal number.

It is an amenable number.

2040317989609 is a deficient number, since it is larger than the sum of its proper divisors (3773644572).

2040317989609 is an frugal number, since it uses more digits than its factorization.

2040317989609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5276 (or 2638 counting only the distinct ones).

The product of its (nonzero) digits is 5878656, while the sum is 58.

The spelling of 2040317989609 in words is "two trillion, forty billion, three hundred seventeen million, nine hundred eighty-nine thousand, six hundred nine".