19980767232 has 416 divisors, whose sum is σ = 64243651200. Its totient is φ = 6115295232.

The previous prime is 19980767231. The next prime is 19980767239. The reversal of 19980767232 is 23276708991.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19980767231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77746048 + ... + 77746304.

Almost surely, 2^19980767232 is an apocalyptic number.

19980767232 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 19980767232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32121825600).

19980767232 is an abundant number, since it is smaller than the sum of its proper divisors (44262883968).

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

19980767232 is a wasteful number, since it uses less digits than its factorization.

19980767232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346 (or 318 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The spelling of 19980767232 in words is "nineteen billion, nine hundred eighty million, seven hundred sixty-seven thousand, two hundred thirty-two".