28440113345279 has 4 divisors (see below), whose sum is σ = 28440189419376. Its totient is φ = 28440037271184.

The previous prime is 28440113345243. The next prime is 28440113345353. The reversal of 28440113345279 is 97254331104482.

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 28440113345279 - 2⁸ = 28440113345023 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28440113345279.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28440113315279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37473494 + ... + 38224899.

It is an arithmetic number, because the mean of its divisors is an integer number (7110047354844).

Almost surely, 2^{28440113345279} is an apocalyptic number.

28440113345279 is a deficient number, since it is larger than the sum of its proper divisors (76074097).

28440113345279 is an equidigital number, since it uses as much as digits as its factorization.

28440113345279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76074096.

The product of its (nonzero) digits is 5806080, while the sum is 53.

The spelling of 28440113345279 in words is "twenty-eight trillion, four hundred forty billion, one hundred thirteen million, three hundred forty-five thousand, two hundred seventy-nine".