19621112648 has 16 divisors (see below), whose sum is σ = 36838584960. Its totient is φ = 9797490000.

The previous prime is 19621112647. The next prime is 19621112653. The reversal of 19621112648 is 84621112691.

It is not an unprimeable number, because it can be changed into a prime (19621112647) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1626908 + ... + 1638923.

It is an arithmetic number, because the mean of its divisors is an integer number (2302411560).

Almost surely, 2^19621112648 is an apocalyptic number.

It is an amenable number.

19621112648 is a deficient number, since it is larger than the sum of its proper divisors (17217472312).

19621112648 is a wasteful number, since it uses less digits than its factorization.

19621112648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3266588 (or 3266584 counting only the distinct ones).

The product of its digits is 41472, while the sum is 41.

The spelling of 19621112648 in words is "nineteen billion, six hundred twenty-one million, one hundred twelve thousand, six hundred forty-eight".