540895380521 has 2 divisors, whose sum is σ = 540895380522. Its totient is φ = 540895380520.

The previous prime is 540895380437. The next prime is 540895380539. The reversal of 540895380521 is 125083598045.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 279406330921 + 261489049600 = 528589^2 + 511360^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-540895380521 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 540895380521.

It is not a weakly prime, because it can be changed into another prime (540895380541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270447690260 + 270447690261.

It is an arithmetic number, because the mean of its divisors is an integer number (270447690261).

Almost surely, 2^540895380521 is an apocalyptic number.

It is an amenable number.

540895380521 is a deficient number, since it is larger than the sum of its proper divisors (1).

540895380521 is an equidigital number, since it uses as much as digits as its factorization.

540895380521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728000, while the sum is 50.

The spelling of 540895380521 in words is "five hundred forty billion, eight hundred ninety-five million, three hundred eighty thousand, five hundred twenty-one".