1943115455573 has 2 divisors, whose sum is σ = 1943115455574. Its totient is φ = 1943115455572.

The previous prime is 1943115455543. The next prime is 1943115455581. The reversal of 1943115455573 is 3755545113491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1893092554609 + 50022900964 = 1375897^2 + 223658^2 .

It is a cyclic number.

It is not a de Polignac number, because 1943115455573 - 2¹⁰ = 1943115454549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1943115455543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 971557727786 + 971557727787.

It is an arithmetic number, because the mean of its divisors is an integer number (971557727787).

Almost surely, 2^{1943115455573} is an apocalyptic number.

It is an amenable number.

1943115455573 is a deficient number, since it is larger than the sum of its proper divisors (1).

1943115455573 is an equidigital number, since it uses as much as digits as its factorization.

1943115455573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5670000, while the sum is 53.

The spelling of 1943115455573 in words is "one trillion, nine hundred forty-three billion, one hundred fifteen million, four hundred fifty-five thousand, five hundred seventy-three".