17442458957849 has 2 divisors, whose sum is σ = 17442458957850. Its totient is φ = 17442458957848.

The previous prime is 17442458957821. The next prime is 17442458957867. The reversal of 17442458957849 is 94875985424471.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15612139488400 + 1830319469449 = 3951220^2 + 1352893^2 .

It is a cyclic number.

It is not a de Polignac number, because 17442458957849 - 2⁸ = 17442458957593 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 17442458957849.

It is not a weakly prime, because it can be changed into another prime (17442418957849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8721229478924 + 8721229478925.

It is an arithmetic number, because the mean of its divisors is an integer number (8721229478925).

Almost surely, 2^{17442458957849} is an apocalyptic number.

It is an amenable number.

17442458957849 is a deficient number, since it is larger than the sum of its proper divisors (1).

17442458957849 is an equidigital number, since it uses as much as digits as its factorization.

17442458957849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3251404800, while the sum is 77.

The spelling of 17442458957849 in words is "seventeen trillion, four hundred forty-two billion, four hundred fifty-eight million, nine hundred fifty-seven thousand, eight hundred forty-nine".