1720623225193 has 2 divisors, whose sum is σ = 1720623225194. Its totient is φ = 1720623225192.

The previous prime is 1720623225161. The next prime is 1720623225329. The reversal of 1720623225193 is 3915223260271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1065668065344 + 654955159849 = 1032312^2 + 809293^2 .

It is a cyclic number.

It is not a de Polignac number, because 1720623225193 - 2⁵ = 1720623225161 is a prime.

It is a super-2 number, since 2×1720623225193² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1720623225493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 860311612596 + 860311612597.

It is an arithmetic number, because the mean of its divisors is an integer number (860311612597).

Almost surely, 2^{1720623225193} is an apocalyptic number.

It is an amenable number.

1720623225193 is a deficient number, since it is larger than the sum of its proper divisors (1).

1720623225193 is an equidigital number, since it uses as much as digits as its factorization.

1720623225193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 43.

The spelling of 1720623225193 in words is "one trillion, seven hundred twenty billion, six hundred twenty-three million, two hundred twenty-five thousand, one hundred ninety-three".