1943115455543 has 2 divisors, whose sum is σ = 1943115455544. Its totient is φ = 1943115455542.

The previous prime is 1943115455527. The next prime is 1943115455573. The reversal of 1943115455543 is 3455545113491.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1943115455543 - 2⁴ = 1943115455527 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1943115455491 and 1943115455500.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1943115455573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 971557727771 + 971557727772.

It is an arithmetic number, because the mean of its divisors is an integer number (971557727772).

Almost surely, 2^{1943115455543} is an apocalyptic number.

1943115455543 is a deficient number, since it is larger than the sum of its proper divisors (1).

1943115455543 is an equidigital number, since it uses as much as digits as its factorization.

1943115455543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240000, while the sum is 50.

The spelling of 1943115455543 in words is "one trillion, nine hundred forty-three billion, one hundred fifteen million, four hundred fifty-five thousand, five hundred forty-three".