28593021868864 has 28 divisors (see below), whose sum is σ = 57669429873508. Its totient is φ = 14062141900800.

The previous prime is 28593021868843. The next prime is 28593021868891. The reversal of 28593021868864 is 46886812039582.

It can be written as a sum of positive squares in 2 ways, for example, as 2054039308864 + 26538982560000 = 1433192^2 + 5151600^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28593021868793 and 28593021868802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3662012217 + ... + 3662020024.

Almost surely, 2^{28593021868864} is an apocalyptic number.

It is an amenable number.

28593021868864 is an abundant number, since it is smaller than the sum of its proper divisors (29076408004644).

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

28593021868864 is an equidigital number, since it uses as much as digits as its factorization.

28593021868864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7324032314 (or 7324032304 counting only the distinct ones).

The product of its (nonzero) digits is 318504960, while the sum is 70.

The spelling of 28593021868864 in words is "twenty-eight trillion, five hundred ninety-three billion, twenty-one million, eight hundred sixty-eight thousand, eight hundred sixty-four".