16813645228 has 48 divisors (see below), whose sum is σ = 30993719904. Its totient is φ = 7970434560.

The previous prime is 16813645207. The next prime is 16813645229. The reversal of 16813645228 is 82254631861.

It is not an unprimeable number, because it can be changed into a prime (16813645229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8815851 + ... + 8817757.

It is an arithmetic number, because the mean of its divisors is an integer number (645702498).

Almost surely, 2^16813645228 is an apocalyptic number.

It is an amenable number.

16813645228 is a deficient number, since it is larger than the sum of its proper divisors (14180074676).

16813645228 is a wasteful number, since it uses less digits than its factorization.

16813645228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3442 (or 3440 counting only the distinct ones).

The product of its digits is 552960, while the sum is 46.

The spelling of 16813645228 in words is "sixteen billion, eight hundred thirteen million, six hundred forty-five thousand, two hundred twenty-eight".