28355299209216 has 312 divisors, whose sum is σ = 97072983140224. Its totient is φ = 8101512069120.

The previous prime is 28355299209197. The next prime is 28355299209247. The reversal of 28355299209216 is 61290299255382.

28355299209216 is a `hidden beast` number, since 2 + 8 + 3 + 5 + 529 + 9 + 2 + 0 + 92 + 16 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4932411 + ... + 9002181.

Almost surely, 2^{28355299209216} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28355299209216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48536491570112).

28355299209216 is an abundant number, since it is smaller than the sum of its proper divisors (68717683931008).

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

28355299209216 is an frugal number, since it uses more digits than its factorization.

28355299209216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4069817 (or 4069783 counting only the distinct ones).

The product of its (nonzero) digits is 41990400, while the sum is 63.

The spelling of 28355299209216 in words is "twenty-eight trillion, three hundred fifty-five billion, two hundred ninety-nine million, two hundred nine thousand, two hundred sixteen".