19966124159 has 16 divisors (see below), whose sum is σ = 20354426400. Its totient is φ = 19582425216.

The previous prime is 19966124153. The next prime is 19966124161. The reversal of 19966124159 is 95142166991.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19966124159 is a prime.

It is a super-2 number, since 2×19966124159² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19966124159.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19966124153) 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 in 15 ways as a sum of consecutive naturals, for example, 5649557 + ... + 5653089.

It is an arithmetic number, because the mean of its divisors is an integer number (1272151650).

Almost surely, 2^19966124159 is an apocalyptic number.

19966124159 is a deficient number, since it is larger than the sum of its proper divisors (388302241).

19966124159 is a wasteful number, since it uses less digits than its factorization.

19966124159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4154.

The product of its digits is 1049760, while the sum is 53.

The spelling of 19966124159 in words is "nineteen billion, nine hundred sixty-six million, one hundred twenty-four thousand, one hundred fifty-nine".