1223333455679 has 4 divisors (see below), whose sum is σ = 1227267004080. Its totient is φ = 1219399907280.

The previous prime is 1223333455649. The next prime is 1223333455699. The reversal of 1223333455679 is 9765543333221.

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 1223333455679 - 2¹⁶ = 1223333390143 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 1223333455679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223333455609) 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 3 ways as a sum of consecutive naturals, for example, 1966773734 + ... + 1966774355.

It is an arithmetic number, because the mean of its divisors is an integer number (306816751020).

Almost surely, 2^{1223333455679} is an apocalyptic number.

1223333455679 is a deficient number, since it is larger than the sum of its proper divisors (3933548401).

1223333455679 is an equidigital number, since it uses as much as digits as its factorization.

1223333455679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3933548400.

The product of its digits is 12247200, while the sum is 53.

The spelling of 1223333455679 in words is "one trillion, two hundred twenty-three billion, three hundred thirty-three million, four hundred fifty-five thousand, six hundred seventy-nine".