16163321784 has 16 divisors (see below), whose sum is σ = 40408304520. Its totient is φ = 5387773920.

The previous prime is 16163321777. The next prime is 16163321819. The reversal of 16163321784 is 48712336161.

It is a happy number.

It is a super-2 number, since 2×16163321784² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 336735847 + ... + 336735894.

Almost surely, 2^16163321784 is an apocalyptic number.

It is an amenable number.

16163321784 is an abundant number, since it is smaller than the sum of its proper divisors (24244982736).

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

16163321784 is a wasteful number, since it uses less digits than its factorization.

16163321784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673471750 (or 673471746 counting only the distinct ones).

The product of its digits is 145152, while the sum is 42.

The spelling of 16163321784 in words is "sixteen billion, one hundred sixty-three million, three hundred twenty-one thousand, seven hundred eighty-four".