16647248220 has 24 divisors (see below), whose sum is σ = 46612295184. Its totient is φ = 4439266176.

The previous prime is 16647248209. The next prime is 16647248231. The reversal of 16647248220 is 2284274661.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (16647248209) and next prime (16647248231).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138727009 + ... + 138727128.

It is an arithmetic number, because the mean of its divisors is an integer number (1942178966).

Almost surely, 2^16647248220 is an apocalyptic number.

16647248220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16647248220 is an abundant number, since it is smaller than the sum of its proper divisors (29965046964).

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

16647248220 is a wasteful number, since it uses less digits than its factorization.

16647248220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277454149 (or 277454147 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 42.

The spelling of 16647248220 in words is "sixteen billion, six hundred forty-seven million, two hundred forty-eight thousand, two hundred twenty".