1655743440443 has 2 divisors, whose sum is σ = 1655743440444. Its totient is φ = 1655743440442.

The previous prime is 1655743440431. The next prime is 1655743440467. The reversal of 1655743440443 is 3440443475561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1655743440443 - 2⁴⁰ = 556231812667 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 1655743440391 and 1655743440400.

It is not a weakly prime, because it can be changed into another prime (1655743460443) 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, 827871720221 + 827871720222.

It is an arithmetic number, because the mean of its divisors is an integer number (827871720222).

Almost surely, 2^{1655743440443} is an apocalyptic number.

1655743440443 is a deficient number, since it is larger than the sum of its proper divisors (1).

1655743440443 is an equidigital number, since it uses as much as digits as its factorization.

1655743440443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9676800, while the sum is 50.

The spelling of 1655743440443 in words is "one trillion, six hundred fifty-five billion, seven hundred forty-three million, four hundred forty thousand, four hundred forty-three".