1223334556779 has 16 divisors (see below), whose sum is σ = 1632776745600. Its totient is φ = 814724528640.

The previous prime is 1223334556739. The next prime is 1223334556781. The reversal of 1223334556779 is 9776554333221.

It is not a de Polignac number, because 1223334556779 - 2³² = 1219039589483 is a prime.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (1223334556739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61846539 + ... + 61866315.

It is an arithmetic number, because the mean of its divisors is an integer number (102048546600).

Almost surely, 2^{1223334556779} is an apocalyptic number.

1223334556779 is a deficient number, since it is larger than the sum of its proper divisors (409442188821).

1223334556779 is a wasteful number, since it uses less digits than its factorization.

1223334556779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39770.

The product of its digits is 28576800, while the sum is 57.

The spelling of 1223334556779 in words is "one trillion, two hundred twenty-three billion, three hundred thirty-four million, five hundred fifty-six thousand, seven hundred seventy-nine".