28818045665280 has 352 divisors, whose sum is σ = 102465144568800. Its totient is φ = 7684736679936.

The previous prime is 28818045665261. The next prime is 28818045665281. The reversal of 28818045665280 is 8256654081882.

28818045665280 is a `hidden beast` number, since 2 + 8 + 8 + 1 + 8 + 0 + 45 + 66 + 528 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28818045665281) 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, 283064626 + ... + 283166414.

Almost surely, 2^{28818045665280} is an apocalyptic number.

28818045665280 is a gapful number since it is divisible by the number (20) 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 28818045665280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51232572284400).

28818045665280 is an abundant number, since it is smaller than the sum of its proper divisors (73647098903520).

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

28818045665280 is an frugal number, since it uses more digits than its factorization.

28818045665280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101845 (or 101799 counting only the distinct ones).

The product of its (nonzero) digits is 58982400, while the sum is 63.

The spelling of 28818045665280 in words is "twenty-eight trillion, eight hundred eighteen billion, forty-five million, six hundred sixty-five thousand, two hundred eighty".