19959148872 has 256 divisors, whose sum is σ = 63308851200. Its totient is φ = 5781611520.

The previous prime is 19959148849. The next prime is 19959148973. The reversal of 19959148872 is 27884195991.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3217678 + ... + 3223874.

It is an arithmetic number, because the mean of its divisors is an integer number (247300200).

Almost surely, 2^19959148872 is an apocalyptic number.

19959148872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19959148872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31654425600).

19959148872 is an abundant number, since it is smaller than the sum of its proper divisors (43349702328).

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

19959148872 is a wasteful number, since it uses less digits than its factorization.

19959148872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6293 (or 6283 counting only the distinct ones).

The product of its digits is 13063680, while the sum is 63.

The spelling of 19959148872 in words is "nineteen billion, nine hundred fifty-nine million, one hundred forty-eight thousand, eight hundred seventy-two".