19718672324 has 48 divisors (see below), whose sum is σ = 38792194560. Its totient is φ = 8708325120.

The previous prime is 19718672287. The next prime is 19718672333. The reversal of 19718672324 is 42327681791.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 74747 + ... + 212189.

It is an arithmetic number, because the mean of its divisors is an integer number (808170720).

Almost surely, 2^19718672324 is an apocalyptic number.

It is an amenable number.

19718672324 is a deficient number, since it is larger than the sum of its proper divisors (19073522236).

19718672324 is a wasteful number, since it uses less digits than its factorization.

19718672324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137580 (or 137578 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 50.

The spelling of 19718672324 in words is "nineteen billion, seven hundred eighteen million, six hundred seventy-two thousand, three hundred twenty-four".