19120561171 has 2 divisors, whose sum is σ = 19120561172. Its totient is φ = 19120561170.

The previous prime is 19120561127. The next prime is 19120561177. The reversal of 19120561171 is 17116502191.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19120561171 - 2⁹ = 19120560659 is a prime.

It is not a weakly prime, because it can be changed into another prime (19120561177) 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, 9560280585 + 9560280586.

It is an arithmetic number, because the mean of its divisors is an integer number (9560280586).

Almost surely, 2^19120561171 is an apocalyptic number.

19120561171 is a deficient number, since it is larger than the sum of its proper divisors (1).

19120561171 is an equidigital number, since it uses as much as digits as its factorization.

19120561171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 34.

The spelling of 19120561171 in words is "nineteen billion, one hundred twenty million, five hundred sixty-one thousand, one hundred seventy-one".