540641021633 has 2 divisors, whose sum is σ = 540641021634. Its totient is φ = 540641021632.

The previous prime is 540641021623. The next prime is 540641021651. The reversal of 540641021633 is 336120146045.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 347667074689 + 192973946944 = 589633^2 + 439288^2 .

It is a cyclic number.

It is not a de Polignac number, because 540641021633 - 2²⁸ = 540372586177 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 540641021593 and 540641021602.

It is not a weakly prime, because it can be changed into another prime (540641021603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270320510816 + 270320510817.

It is an arithmetic number, because the mean of its divisors is an integer number (270320510817).

Almost surely, 2^540641021633 is an apocalyptic number.

It is an amenable number.

540641021633 is a deficient number, since it is larger than the sum of its proper divisors (1).

540641021633 is an equidigital number, since it uses as much as digits as its factorization.

540641021633 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 35.

Adding to 540641021633 its reverse (336120146045), we get a palindrome (876761167678).

The spelling of 540641021633 in words is "five hundred forty billion, six hundred forty-one million, twenty-one thousand, six hundred thirty-three".