540081844481 has 2 divisors, whose sum is σ = 540081844482. Its totient is φ = 540081844480.

The previous prime is 540081844457. The next prime is 540081844501. The reversal of 540081844481 is 184448180045.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 530078644225 + 10003200256 = 728065^2 + 100016^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-540081844481 is a prime.

It is a super-2 number, since 2×540081844481² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (540081844441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270040922240 + 270040922241.

It is an arithmetic number, because the mean of its divisors is an integer number (270040922241).

Almost surely, 2^540081844481 is an apocalyptic number.

It is an amenable number.

540081844481 is a deficient number, since it is larger than the sum of its proper divisors (1).

540081844481 is an equidigital number, since it uses as much as digits as its factorization.

540081844481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 655360, while the sum is 47.

The spelling of 540081844481 in words is "five hundred forty billion, eighty-one million, eight hundred forty-four thousand, four hundred eighty-one".