17561941043 has 2 divisors, whose sum is σ = 17561941044. Its totient is φ = 17561941042.

The previous prime is 17561941039. The next prime is 17561941049. The reversal of 17561941043 is 34014916571.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 17561941043 - 2² = 17561941039 is a prime.

It is not a weakly prime, because it can be changed into another prime (17561941049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8780970521 + 8780970522.

It is an arithmetic number, because the mean of its divisors is an integer number (8780970522).

Almost surely, 2^17561941043 is an apocalyptic number.

17561941043 is a deficient number, since it is larger than the sum of its proper divisors (1).

17561941043 is an equidigital number, since it uses as much as digits as its factorization.

17561941043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 41.

The spelling of 17561941043 in words is "seventeen billion, five hundred sixty-one million, nine hundred forty-one thousand, forty-three".