28168116504320 has 72 divisors (see below), whose sum is σ = 72661552496736. Its totient is φ = 10400535318528.

The previous prime is 28168116504301. The next prime is 28168116504323. The reversal of 28168116504320 is 2340561186182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28168116504323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 846381092 + ... + 846414371.

Almost surely, 2^{28168116504320} is an apocalyptic number.

28168116504320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28168116504320 is an abundant number, since it is smaller than the sum of its proper divisors (44493435992416).

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

28168116504320 is a wasteful number, since it uses less digits than its factorization.

28168116504320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1692795497 (or 1692795483 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 47.

The spelling of 28168116504320 in words is "twenty-eight trillion, one hundred sixty-eight billion, one hundred sixteen million, five hundred four thousand, three hundred twenty".