809140700053541 has 2 divisors, whose sum is σ = 809140700053542. Its totient is φ = 809140700053540.

The previous prime is 809140700053339. The next prime is 809140700053571. The reversal of 809140700053541 is 145350007041908.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 456244900812100 + 352895799241441 = 21359890^2 + 18785521^2 .

It is a cyclic number.

It is not a de Polignac number, because 809140700053541 - 2¹⁴ = 809140700037157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (809140700053571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404570350026770 + 404570350026771.

It is an arithmetic number, because the mean of its divisors is an integer number (404570350026771).

Almost surely, 2^{809140700053541} is an apocalyptic number.

It is an amenable number.

809140700053541 is a deficient number, since it is larger than the sum of its proper divisors (1).

809140700053541 is an equidigital number, since it uses as much as digits as its factorization.

809140700053541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 604800, while the sum is 47.

The spelling of 809140700053541 in words is "eight hundred nine trillion, one hundred forty billion, seven hundred million, fifty-three thousand, five hundred forty-one".