540426511409 has 2 divisors, whose sum is σ = 540426511410. Its totient is φ = 540426511408.

The previous prime is 540426511349. The next prime is 540426511441. The reversal of 540426511409 is 904115624045.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 317763327025 + 222663184384 = 563705^2 + 471872^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-540426511409 is a prime.

It is not a weakly prime, because it can be changed into another prime (540426511459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270213255704 + 270213255705.

It is an arithmetic number, because the mean of its divisors is an integer number (270213255705).

Almost surely, 2^540426511409 is an apocalyptic number.

It is an amenable number.

540426511409 is a deficient number, since it is larger than the sum of its proper divisors (1).

540426511409 is an equidigital number, since it uses as much as digits as its factorization.

540426511409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 172800, while the sum is 41.

The spelling of 540426511409 in words is "five hundred forty billion, four hundred twenty-six million, five hundred eleven thousand, four hundred nine".