28421293325568 has 576 divisors, whose sum is σ = 92624635084800. Its totient is φ = 7618771353600.

The previous prime is 28421293325483. The next prime is 28421293325597. The reversal of 28421293325568 is 86552339212482.

It is a super-3 number, since 3×28421293325568³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 350627508 + ... + 350708556.

Almost surely, 2^{28421293325568} 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 28421293325568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46312317542400).

28421293325568 is an abundant number, since it is smaller than the sum of its proper divisors (64203341759232).

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

28421293325568 is a wasteful number, since it uses less digits than its factorization.

28421293325568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81226 (or 81212 counting only the distinct ones).

The product of its digits is 49766400, while the sum is 60.

The spelling of 28421293325568 in words is "twenty-eight trillion, four hundred twenty-one billion, two hundred ninety-three million, three hundred twenty-five thousand, five hundred sixty-eight".