19640328336 has 40 divisors (see below), whose sum is σ = 56375017760. Its totient is φ = 6546775968.

The previous prime is 19640328313. The next prime is 19640328347. The reversal of 19640328336 is 63382304691.

19640328336 is a `hidden beast` number, since 196 + 403 + 28 + 3 + 36 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 19640328291 and 19640328300.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22731430 + ... + 22732293.

It is an arithmetic number, because the mean of its divisors is an integer number (1409375444).

Almost surely, 2^19640328336 is an apocalyptic number.

19640328336 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

19640328336 is an abundant number, since it is smaller than the sum of its proper divisors (36734689424).

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

19640328336 is a wasteful number, since it uses less digits than its factorization.

19640328336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45463740 (or 45463728 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 45.

The spelling of 19640328336 in words is "nineteen billion, six hundred forty million, three hundred twenty-eight thousand, three hundred thirty-six".