1705239440453 has 2 divisors, whose sum is σ = 1705239440454. Its totient is φ = 1705239440452.

The previous prime is 1705239440449. The next prime is 1705239440479. The reversal of 1705239440453 is 3540449325071.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1214794139329 + 490445301124 = 1102177^2 + 700318^2 .

It is a cyclic number.

It is not a de Polignac number, because 1705239440453 - 2² = 1705239440449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1705239440398 and 1705239440407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1705239440413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 852619720226 + 852619720227.

It is an arithmetic number, because the mean of its divisors is an integer number (852619720227).

Almost surely, 2^{1705239440453} is an apocalyptic number.

It is an amenable number.

1705239440453 is a deficient number, since it is larger than the sum of its proper divisors (1).

1705239440453 is an equidigital number, since it uses as much as digits as its factorization.

1705239440453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1814400, while the sum is 47.

The spelling of 1705239440453 in words is "one trillion, seven hundred five billion, two hundred thirty-nine million, four hundred forty thousand, four hundred fifty-three".