1234445556779 has 4 divisors (see below), whose sum is σ = 1239836148960. Its totient is φ = 1229054964600.

The previous prime is 1234445556767. The next prime is 1234445556833. The reversal of 1234445556779 is 9776555444321.

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 1234445556779 - 2²⁸ = 1234177121323 is a prime.

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 (1234445556719) 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, 2695295747 + ... + 2695296204.

It is an arithmetic number, because the mean of its divisors is an integer number (309959037240).

Almost surely, 2^{1234445556779} is an apocalyptic number.

1234445556779 is a deficient number, since it is larger than the sum of its proper divisors (5390592181).

1234445556779 is an equidigital number, since it uses as much as digits as its factorization.

1234445556779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5390592180.

The product of its digits is 127008000, while the sum is 62.

The spelling of 1234445556779 in words is "one trillion, two hundred thirty-four billion, four hundred forty-five million, five hundred fifty-six thousand, seven hundred seventy-nine".