19980883312 has 80 divisors (see below), whose sum is σ = 42166051200. Its totient is φ = 9117444096.

The previous prime is 19980883277. The next prime is 19980883331. The reversal of 19980883312 is 21338808991.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a self number, because there is not a number n which added to its sum of digits gives 19980883312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7219753 + ... + 7222519.

It is an arithmetic number, because the mean of its divisors is an integer number (527075640).

Almost surely, 2^19980883312 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 19980883312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21083025600).

19980883312 is an abundant number, since it is smaller than the sum of its proper divisors (22185167888).

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

19980883312 is a wasteful number, since it uses less digits than its factorization.

19980883312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3170 (or 3164 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 52.

The spelling of 19980883312 in words is "nineteen billion, nine hundred eighty million, eight hundred eighty-three thousand, three hundred twelve".