1773204544481 has 2 divisors, whose sum is σ = 1773204544482. Its totient is φ = 1773204544480.

The previous prime is 1773204544429. The next prime is 1773204544511. The reversal of 1773204544481 is 1844454023771.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1642601089600 + 130603454881 = 1281640^2 + 361391^2 .

It is a cyclic number.

It is not a de Polignac number, because 1773204544481 - 2²⁶ = 1773137435617 is a prime.

It is a super-2 number, since 2×1773204544481² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1773204544421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 886602272240 + 886602272241.

It is an arithmetic number, because the mean of its divisors is an integer number (886602272241).

Almost surely, 2^{1773204544481} is an apocalyptic number.

It is an amenable number.

1773204544481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1773204544481 is an equidigital number, since it uses as much as digits as its factorization.

1773204544481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3010560, while the sum is 50.

The spelling of 1773204544481 in words is "one trillion, seven hundred seventy-three billion, two hundred four million, five hundred forty-four thousand, four hundred eighty-one".