17504989049 has 2 divisors, whose sum is σ = 17504989050. Its totient is φ = 17504989048.

The previous prime is 17504989027. The next prime is 17504989087. The reversal of 17504989049 is 94098940571.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10234357225 + 7270631824 = 101165^2 + 85268^2 .

It is an emirp because it is prime and its reverse (94098940571) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 17504989049 - 2⁸ = 17504988793 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 17504988985 and 17504989003.

It is not a weakly prime, because it can be changed into another prime (17504983049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8752494524 + 8752494525.

It is an arithmetic number, because the mean of its divisors is an integer number (8752494525).

Almost surely, 2^17504989049 is an apocalyptic number.

It is an amenable number.

17504989049 is a deficient number, since it is larger than the sum of its proper divisors (1).

17504989049 is an equidigital number, since it uses as much as digits as its factorization.

17504989049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3265920, while the sum is 56.

The spelling of 17504989049 in words is "seventeen billion, five hundred four million, nine hundred eighty-nine thousand, forty-nine".