123111444479 has 4 divisors (see below), whose sum is σ = 125434301976. Its totient is φ = 120788586984.

The previous prime is 123111444413. The next prime is 123111444481. The reversal of 123111444479 is 974444111321.

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 123111444479 - 2⁸ = 123111444223 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 (123111444499) 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, 1161428669 + ... + 1161428774.

It is an arithmetic number, because the mean of its divisors is an integer number (31358575494).

Almost surely, 2^123111444479 is an apocalyptic number.

123111444479 is a deficient number, since it is larger than the sum of its proper divisors (2322857497).

123111444479 is an equidigital number, since it uses as much as digits as its factorization.

123111444479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2322857496.

The product of its digits is 96768, while the sum is 41.

The spelling of 123111444479 in words is "one hundred twenty-three billion, one hundred eleven million, four hundred forty-four thousand, four hundred seventy-nine".