28168936926751 has 4 divisors (see below), whose sum is σ = 28170535363312. Its totient is φ = 28167338490192.

The previous prime is 28168936926679. The next prime is 28168936926827. The reversal of 28168936926751 is 15762963986182.

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 28168936926751 - 2¹⁵ = 28168936893983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28168936926451) 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, 799191846 + ... + 799227091.

It is an arithmetic number, because the mean of its divisors is an integer number (7042633840828).

Almost surely, 2^{28168936926751} is an apocalyptic number.

28168936926751 is a deficient number, since it is larger than the sum of its proper divisors (1598436561).

28168936926751 is a wasteful number, since it uses less digits than its factorization.

28168936926751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1598436560.

The product of its digits is 470292480, while the sum is 73.

The spelling of 28168936926751 in words is "twenty-eight trillion, one hundred sixty-eight billion, nine hundred thirty-six million, nine hundred twenty-six thousand, seven hundred fifty-one".