22128075479 has 4 divisors (see below), whose sum is σ = 22128881376. Its totient is φ = 22127269584.

The previous prime is 22128075467. The next prime is 22128075623. The reversal of 22128075479 is 97457082122.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22128075479 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 (22128075439) 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, 360254 + ... + 417179.

It is an arithmetic number, because the mean of its divisors is an integer number (5532220344).

Almost surely, 2^22128075479 is an apocalyptic number.

22128075479 is a deficient number, since it is larger than the sum of its proper divisors (805897).

22128075479 is an equidigital number, since it uses as much as digits as its factorization.

22128075479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805896.

The product of its (nonzero) digits is 564480, while the sum is 47.

The spelling of 22128075479 in words is "twenty-two billion, one hundred twenty-eight million, seventy-five thousand, four hundred seventy-nine".