540345033003221 has 2 divisors, whose sum is σ = 540345033003222. Its totient is φ = 540345033003220.

The previous prime is 540345033003203. The next prime is 540345033003229. The reversal of 540345033003221 is 122300330543045.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 540175968122596 + 169064880625 = 23241686^2 + 411175^2 .

It is a cyclic number.

It is not a de Polignac number, because 540345033003221 - 2¹⁰ = 540345033002197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (540345033003229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270172516501610 + 270172516501611.

It is an arithmetic number, because the mean of its divisors is an integer number (270172516501611).

Almost surely, 2^{540345033003221} is an apocalyptic number.

It is an amenable number.

540345033003221 is a deficient number, since it is larger than the sum of its proper divisors (1).

540345033003221 is an equidigital number, since it uses as much as digits as its factorization.

540345033003221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129600, while the sum is 35.

Adding to 540345033003221 its reverse (122300330543045), we get a palindrome (662645363546266).

The spelling of 540345033003221 in words is "five hundred forty trillion, three hundred forty-five billion, thirty-three million, three thousand, two hundred twenty-one".