17561006423 has 2 divisors, whose sum is σ = 17561006424. Its totient is φ = 17561006422.

The previous prime is 17561006417. The next prime is 17561006447. The reversal of 17561006423 is 32460016571.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 17561006423 - 2¹⁴ = 17560990039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17561006413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8780503211 + 8780503212.

It is an arithmetic number, because the mean of its divisors is an integer number (8780503212).

Almost surely, 2^17561006423 is an apocalyptic number.

17561006423 is a deficient number, since it is larger than the sum of its proper divisors (1).

17561006423 is an equidigital number, since it uses as much as digits as its factorization.

17561006423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 35.

The spelling of 17561006423 in words is "seventeen billion, five hundred sixty-one million, six thousand, four hundred twenty-three".