28168295568367 has 4 divisors (see below), whose sum is σ = 28187952440400. Its totient is φ = 28148638696336.

The previous prime is 28168295568359. The next prime is 28168295568409. The reversal of 28168295568367 is 76386559286182.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28168295568367 - 2³ = 28168295568359 is a prime.

It is a super-3 number, since 3×28168295568367³ (a number of 41 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (76) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28168295568293 and 28168295568302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28168295568067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9828433867 + ... + 9828436732.

It is an arithmetic number, because the mean of its divisors is an integer number (7046988110100).

Almost surely, 2^{28168295568367} is an apocalyptic number.

28168295568367 is a deficient number, since it is larger than the sum of its proper divisors (19656872033).

28168295568367 is a wasteful number, since it uses less digits than its factorization.

28168295568367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19656872032.

The product of its digits is 2090188800, while the sum is 76.

The spelling of 28168295568367 in words is "twenty-eight trillion, one hundred sixty-eight billion, two hundred ninety-five million, five hundred sixty-eight thousand, three hundred sixty-seven".