540366121289 has 4 divisors (see below), whose sum is σ = 540381053124. Its totient is φ = 540351189456.

The previous prime is 540366121219. The next prime is 540366121319. The reversal of 540366121289 is 982121663045.

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 433842216889 + 106523904400 = 658667^2 + 326380^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-540366121289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (540366121219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7411502 + ... + 7484055.

It is an arithmetic number, because the mean of its divisors is an integer number (135095263281).

Almost surely, 2^540366121289 is an apocalyptic number.

It is an amenable number.

540366121289 is a deficient number, since it is larger than the sum of its proper divisors (14931835).

540366121289 is a wasteful number, since it uses less digits than its factorization.

540366121289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14931834.

The product of its (nonzero) digits is 622080, while the sum is 47.

The spelling of 540366121289 in words is "five hundred forty billion, three hundred sixty-six million, one hundred twenty-one thousand, two hundred eighty-nine".