1805580449279 has 2 divisors, whose sum is σ = 1805580449280. Its totient is φ = 1805580449278.

The previous prime is 1805580449213. The next prime is 1805580449293. The reversal of 1805580449279 is 9729440855081.

It is a strong prime.

It is an emirp because it is prime and its reverse (9729440855081) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1805580449279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1805580949279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 902790224639 + 902790224640.

It is an arithmetic number, because the mean of its divisors is an integer number (902790224640).

Almost surely, 2^{1805580449279} is an apocalyptic number.

1805580449279 is a deficient number, since it is larger than the sum of its proper divisors (1).

1805580449279 is an equidigital number, since it uses as much as digits as its factorization.

1805580449279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29030400, while the sum is 62.

The spelling of 1805580449279 in words is "one trillion, eight hundred five billion, five hundred eighty million, four hundred forty-nine thousand, two hundred seventy-nine".