28159945679 has 8 divisors (see below), whose sum is σ = 28192698000. Its totient is φ = 28127214976.

The previous prime is 28159945673. The next prime is 28159945717. The reversal of 28159945679 is 97654995182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28159945679 - 2¹⁶ = 28159880143 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 (28159945673) 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, 4429367 + ... + 4435719.

It is an arithmetic number, because the mean of its divisors is an integer number (3524087250).

Almost surely, 2^28159945679 is an apocalyptic number.

28159945679 is a deficient number, since it is larger than the sum of its proper divisors (32752321).

28159945679 is a wasteful number, since it uses less digits than its factorization.

28159945679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10809.

The product of its digits is 48988800, while the sum is 65.

The spelling of 28159945679 in words is "twenty-eight billion, one hundred fifty-nine million, nine hundred forty-five thousand, six hundred seventy-nine".