540256644539 has 2 divisors, whose sum is σ = 540256644540. Its totient is φ = 540256644538.

The previous prime is 540256644457. The next prime is 540256644547. The reversal of 540256644539 is 935446652045.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-540256644539 is a prime.

It is not a weakly prime, because it can be changed into another prime (540256643539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270128322269 + 270128322270.

It is an arithmetic number, because the mean of its divisors is an integer number (270128322270).

Almost surely, 2^540256644539 is an apocalyptic number.

540256644539 is a deficient number, since it is larger than the sum of its proper divisors (1).

540256644539 is an equidigital number, since it uses as much as digits as its factorization.

540256644539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552000, while the sum is 53.

The spelling of 540256644539 in words is "five hundred forty billion, two hundred fifty-six million, six hundred forty-four thousand, five hundred thirty-nine".