19789665080 has 32 divisors (see below), whose sum is σ = 46870261200. Its totient is φ = 7499241216.

The previous prime is 19789665059. The next prime is 19789665089. The reversal of 19789665080 is 8056698791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19789665089) 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 7 ways as a sum of consecutive naturals, for example, 13018757 + ... + 13020276.

Almost surely, 2^19789665080 is an apocalyptic number.

19789665080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19789665080 is an abundant number, since it is smaller than the sum of its proper divisors (27080596120).

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

19789665080 is a wasteful number, since it uses less digits than its factorization.

19789665080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26039063 (or 26039059 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 59.

The spelling of 19789665080 in words is "nineteen billion, seven hundred eighty-nine million, six hundred sixty-five thousand, eighty".