19471143122 has 6 divisors (see below), whose sum is σ = 29207010693. Its totient is φ = 9735472892.

The previous prime is 19471143079. The next prime is 19471143149. The reversal of 19471143122 is 22134117491.

It can be written as a sum of positive squares in 2 ways, for example, as 12588615601 + 6882527521 = 112199^2 + 82961^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=98669.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 148004 + ... + 246672.

Almost surely, 2^19471143122 is an apocalyptic number.

19471143122 is a deficient number, since it is larger than the sum of its proper divisors (9735867571).

19471143122 is an frugal number, since it uses more digits than its factorization.

19471143122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197340 (or 98671 counting only the distinct ones).

The product of its digits is 12096, while the sum is 35.

The spelling of 19471143122 in words is "nineteen billion, four hundred seventy-one million, one hundred forty-three thousand, one hundred twenty-two".