28452454708566 has 256 divisors, whose sum is σ = 68056547328000. Its totient is φ = 7762615575552.

The previous prime is 28452454708529. The next prime is 28452454708591. The reversal of 28452454708566 is 66580745425482.

It is a junction number, because it is equal to n+sod(n) for n = 28452454708497 and 28452454708506.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 13555241785 + ... + 13555243883.

It is an arithmetic number, because the mean of its divisors is an integer number (265845888000).

Almost surely, 2^{28452454708566} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28452454708566, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34028273664000).

28452454708566 is an abundant number, since it is smaller than the sum of its proper divisors (39604092619434).

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

28452454708566 is a wasteful number, since it uses less digits than its factorization.

28452454708566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3203.

The product of its (nonzero) digits is 516096000, while the sum is 66.

The spelling of 28452454708566 in words is "twenty-eight trillion, four hundred fifty-two billion, four hundred fifty-four million, seven hundred eight thousand, five hundred sixty-six".