16649793216 has 112 divisors (see below), whose sum is σ = 55939822080. Its totient is φ = 4757080320.

The previous prime is 16649793203. The next prime is 16649793227. The reversal of 16649793216 is 61239794661.

16649793216 is a `hidden beast` number, since 1 + 66 + 497 + 93 + 2 + 1 + 6 = 666.

16649793216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (112).

It is a super-2 number, since 2×16649793216² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

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, 676140 + ... + 700331.

Almost surely, 2^16649793216 is an apocalyptic number.

16649793216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16649793216 is an abundant number, since it is smaller than the sum of its proper divisors (39290028864).

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

16649793216 is a wasteful number, since it uses less digits than its factorization.

16649793216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1376499 (or 1376483 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 54.

The spelling of 16649793216 in words is "sixteen billion, six hundred forty-nine million, seven hundred ninety-three thousand, two hundred sixteen".