16653338784 has 72 divisors (see below), whose sum is σ = 49416992352. Its totient is φ = 5309758080.

The previous prime is 16653338783. The next prime is 16653338797. The reversal of 16653338784 is 48783335661.

16653338784 is a `hidden beast` number, since 1 + 6 + 6 + 533 + 38 + 78 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a self number, because there is not a number n which added to its sum of digits gives 16653338784.

It is not an unprimeable number, because it can be changed into a prime (16653338783) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1250422 + ... + 1263669.

It is an arithmetic number, because the mean of its divisors is an integer number (686347116).

Almost surely, 2^16653338784 is an apocalyptic number.

It is an amenable number.

16653338784 is an abundant number, since it is smaller than the sum of its proper divisors (32763653568).

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

16653338784 is a wasteful number, since it uses less digits than its factorization.

16653338784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2514130 (or 2514119 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 54.

The spelling of 16653338784 in words is "sixteen billion, six hundred fifty-three million, three hundred thirty-eight thousand, seven hundred eighty-four".