16872845220 has 432 divisors, whose sum is σ = 66037398336. Its totient is φ = 3447360000.

The previous prime is 16872845179. The next prime is 16872845239. The reversal of 16872845220 is 2254827861.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 5916795 + ... + 5919645.

It is an arithmetic number, because the mean of its divisors is an integer number (152864348).

Almost surely, 2^16872845220 is an apocalyptic number.

16872845220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16872845220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33018699168).

16872845220 is an abundant number, since it is smaller than the sum of its proper divisors (49164553116).

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

16872845220 is a wasteful number, since it uses less digits than its factorization.

16872845220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2952 (or 2940 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 45.

The spelling of 16872845220 in words is "sixteen billion, eight hundred seventy-two million, eight hundred forty-five thousand, two hundred twenty".