19163217996 has 72 divisors (see below), whose sum is σ = 52221178464. Its totient is φ = 5890199040.

The previous prime is 19163217959. The next prime is 19163218027. The reversal of 19163217996 is 69971236191.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 436281 + ... + 478191.

Almost surely, 2^19163217996 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19163217996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26110589232).

19163217996 is an abundant number, since it is smaller than the sum of its proper divisors (33057960468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19163217996 is a wasteful number, since it uses less digits than its factorization.

19163217996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42911 (or 42906 counting only the distinct ones).

The product of its digits is 1102248, while the sum is 54.

It can be divided in two parts, 191632 and 17996, that added together give a triangular number (209628 = T₆₄₇).

The spelling of 19163217996 in words is "nineteen billion, one hundred sixty-three million, two hundred seventeen thousand, nine hundred ninety-six".