22222446779 has 16 divisors (see below), whose sum is σ = 24132743040. Its totient is φ = 20341376640.

The previous prime is 22222446709. The next prime is 22222446793. The reversal of 22222446779 is 97764422222.

It is a de Polignac number, because none of the positive numbers 2^k-22222446779 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (22222446709) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1028174 + ... + 1049564.

It is an arithmetic number, because the mean of its divisors is an integer number (1508296440).

Almost surely, 2^22222446779 is an apocalyptic number.

22222446779 is a deficient number, since it is larger than the sum of its proper divisors (1910296261).

22222446779 is a wasteful number, since it uses less digits than its factorization.

22222446779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22070.

The product of its digits is 1354752, while the sum is 47.

The spelling of 22222446779 in words is "twenty-two billion, two hundred twenty-two million, four hundred forty-six thousand, seven hundred seventy-nine".