17513245049 has 2 divisors, whose sum is σ = 17513245050. Its totient is φ = 17513245048.

The previous prime is 17513245031. The next prime is 17513245063. The reversal of 17513245049 is 94054231571.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11828085049 + 5685160000 = 108757^2 + 75400^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17513245049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 17513244997 and 17513245015.

It is not a weakly prime, because it can be changed into another prime (17513245549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8756622524 + 8756622525.

It is an arithmetic number, because the mean of its divisors is an integer number (8756622525).

Almost surely, 2^17513245049 is an apocalyptic number.

It is an amenable number.

17513245049 is a deficient number, since it is larger than the sum of its proper divisors (1).

17513245049 is an equidigital number, since it uses as much as digits as its factorization.

17513245049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 151200, while the sum is 41.

The spelling of 17513245049 in words is "seventeen billion, five hundred thirteen million, two hundred forty-five thousand, forty-nine".