16278321116 has 12 divisors (see below), whose sum is σ = 29725630032. Its totient is φ = 7785283968.

The previous prime is 16278321113. The next prime is 16278321121. The reversal of 16278321116 is 61112387261.

It is a super-2 number, since 2×16278321116² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16278321116.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16278321113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88469045 + ... + 88469228.

It is an arithmetic number, because the mean of its divisors is an integer number (2477135836).

Almost surely, 2^16278321116 is an apocalyptic number.

It is an amenable number.

16278321116 is a deficient number, since it is larger than the sum of its proper divisors (13447308916).

16278321116 is a wasteful number, since it uses less digits than its factorization.

16278321116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176938300 (or 176938298 counting only the distinct ones).

The product of its digits is 24192, while the sum is 38.

The spelling of 16278321116 in words is "sixteen billion, two hundred seventy-eight million, three hundred twenty-one thousand, one hundred sixteen".