28321648705323 has 16 divisors (see below), whose sum is σ = 41958209233440. Its totient is φ = 18881004118752.

The previous prime is 28321648705277. The next prime is 28321648705457. The reversal of 28321648705323 is 32350784612382.

28321648705323 is a `hidden beast` number, since 2 + 8 + 3 + 21 + 6 + 4 + 87 + 0 + 532 + 3 = 666.

It is not a de Polignac number, because 28321648705323 - 2⁸ = 28321648705067 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28321648705323.

It is not an unprimeable number, because it can be changed into a prime (28321648707323) 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, 3047965 + ... + 8119937.

It is an arithmetic number, because the mean of its divisors is an integer number (2622388077090).

Almost surely, 2^{28321648705323} is an apocalyptic number.

28321648705323 is a deficient number, since it is larger than the sum of its proper divisors (13636560528117).

28321648705323 is a wasteful number, since it uses less digits than its factorization.

28321648705323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5278795 (or 5278789 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 54.

The spelling of 28321648705323 in words is "twenty-eight trillion, three hundred twenty-one billion, six hundred forty-eight million, seven hundred five thousand, three hundred twenty-three".