19680081328 has 20 divisors (see below), whose sum is σ = 38195133480. Its totient is φ = 9823272704.

The previous prime is 19680081277. The next prime is 19680081361. The reversal of 19680081328 is 82318008691.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1038313 + ... + 1057096.

It is an arithmetic number, because the mean of its divisors is an integer number (1909756674).

Almost surely, 2^19680081328 is an apocalyptic number.

It is an amenable number.

19680081328 is a deficient number, since it is larger than the sum of its proper divisors (18515052152).

19680081328 is a wasteful number, since it uses less digits than its factorization.

19680081328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2096004 (or 2095998 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 46.

The spelling of 19680081328 in words is "nineteen billion, six hundred eighty million, eighty-one thousand, three hundred twenty-eight".