28179162273 has 4 divisors (see below), whose sum is σ = 37572216368. Its totient is φ = 18786108180.

The previous prime is 28179162211. The next prime is 28179162293. The reversal of 28179162273 is 37226197182.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 28179162273 - 2⁹ = 28179161761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28179162203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4696527043 + ... + 4696527048.

It is an arithmetic number, because the mean of its divisors is an integer number (9393054092).

Almost surely, 2^28179162273 is an apocalyptic number.

It is an amenable number.

28179162273 is a deficient number, since it is larger than the sum of its proper divisors (9393054095).

28179162273 is an equidigital number, since it uses as much as digits as its factorization.

28179162273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9393054094.

The product of its digits is 508032, while the sum is 48.

The spelling of 28179162273 in words is "twenty-eight billion, one hundred seventy-nine million, one hundred sixty-two thousand, two hundred seventy-three".