540042446261 has 2 divisors, whose sum is σ = 540042446262. Its totient is φ = 540042446260.

The previous prime is 540042446243. The next prime is 540042446297. The reversal of 540042446261 is 162644240045.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 331207156036 + 208835290225 = 575506^2 + 456985^2 .

It is a cyclic number.

It is not a de Polignac number, because 540042446261 - 2²² = 540038251957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (540042446161) 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 as a sum of consecutive naturals, namely, 270021223130 + 270021223131.

It is an arithmetic number, because the mean of its divisors is an integer number (270021223131).

Almost surely, 2^540042446261 is an apocalyptic number.

It is an amenable number.

540042446261 is a deficient number, since it is larger than the sum of its proper divisors (1).

540042446261 is an equidigital number, since it uses as much as digits as its factorization.

540042446261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 184320, while the sum is 38.

The spelling of 540042446261 in words is "five hundred forty billion, forty-two million, four hundred forty-six thousand, two hundred sixty-one".