17204485561 has 2 divisors, whose sum is σ = 17204485562. Its totient is φ = 17204485560.

The previous prime is 17204485481. The next prime is 17204485577. The reversal of 17204485561 is 16558440271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15729925561 + 1474560000 = 125419^2 + 38400^2 .

It is a cyclic number.

It is not a de Polignac number, because 17204485561 - 2¹³ = 17204477369 is a prime.

It is not a weakly prime, because it can be changed into another prime (17204485591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8602242780 + 8602242781.

It is an arithmetic number, because the mean of its divisors is an integer number (8602242781).

Almost surely, 2^17204485561 is an apocalyptic number.

It is an amenable number.

17204485561 is a deficient number, since it is larger than the sum of its proper divisors (1).

17204485561 is an equidigital number, since it uses as much as digits as its factorization.

17204485561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 268800, while the sum is 43.

The spelling of 17204485561 in words is "seventeen billion, two hundred four million, four hundred eighty-five thousand, five hundred sixty-one".