1745331620993 has 2 divisors, whose sum is σ = 1745331620994. Its totient is φ = 1745331620992.

The previous prime is 1745331620951. The next prime is 1745331621037. The reversal of 1745331620993 is 3990261335471.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1693998562369 + 51333058624 = 1301537^2 + 226568^2 .

It is an emirp because it is prime and its reverse (3990261335471) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1745331620993 - 2²⁴ = 1745314843777 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1745331820993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 872665810496 + 872665810497.

It is an arithmetic number, because the mean of its divisors is an integer number (872665810497).

Almost surely, 2^{1745331620993} is an apocalyptic number.

It is an amenable number.

1745331620993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1745331620993 is an equidigital number, since it uses as much as digits as its factorization.

1745331620993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3674160, while the sum is 53.

The spelling of 1745331620993 in words is "one trillion, seven hundred forty-five billion, three hundred thirty-one million, six hundred twenty thousand, nine hundred ninety-three".