540661455077 has 2 divisors, whose sum is σ = 540661455078. Its totient is φ = 540661455076.

The previous prime is 540661455071. The next prime is 540661455161. The reversal of 540661455077 is 770554166045.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 528142306756 + 12519148321 = 726734^2 + 111889^2 .

It is a cyclic number.

It is not a de Polignac number, because 540661455077 - 2¹⁴ = 540661438693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (540661455071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270330727538 + 270330727539.

It is an arithmetic number, because the mean of its divisors is an integer number (270330727539).

Almost surely, 2^540661455077 is an apocalyptic number.

It is an amenable number.

540661455077 is a deficient number, since it is larger than the sum of its proper divisors (1).

540661455077 is an equidigital number, since it uses as much as digits as its factorization.

540661455077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528000, while the sum is 50.

The spelling of 540661455077 in words is "five hundred forty billion, six hundred sixty-one million, four hundred fifty-five thousand, seventy-seven".