1605423203743 has 2 divisors, whose sum is σ = 1605423203744. Its totient is φ = 1605423203742.

The previous prime is 1605423203689. The next prime is 1605423203753. The reversal of 1605423203743 is 3473023245061.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1605423203743 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1605423203696 and 1605423203705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1605423203753) 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, 802711601871 + 802711601872.

It is an arithmetic number, because the mean of its divisors is an integer number (802711601872).

Almost surely, 2^{1605423203743} is an apocalyptic number.

1605423203743 is a deficient number, since it is larger than the sum of its proper divisors (1).

1605423203743 is an equidigital number, since it uses as much as digits as its factorization.

1605423203743 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 40.

The spelling of 1605423203743 in words is "one trillion, six hundred five billion, four hundred twenty-three million, two hundred three thousand, seven hundred forty-three".