123344556679 has 4 divisors (see below), whose sum is σ = 126678193384. Its totient is φ = 120010919976.

The previous prime is 123344556593. The next prime is 123344556689. The reversal of 123344556679 is 976655443321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 976655443321 = 821 ⋅1189592501.

It is a cyclic number.

It is not a de Polignac number, because 123344556679 - 2¹³ = 123344548487 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123344556689) 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, 1666818297 + ... + 1666818370.

It is an arithmetic number, because the mean of its divisors is an integer number (31669548346).

Almost surely, 2^123344556679 is an apocalyptic number.

123344556679 is a deficient number, since it is larger than the sum of its proper divisors (3333636705).

123344556679 is an equidigital number, since it uses as much as digits as its factorization.

123344556679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3333636704.

The product of its digits is 16329600, while the sum is 55.

The spelling of 123344556679 in words is "one hundred twenty-three billion, three hundred forty-four million, five hundred fifty-six thousand, six hundred seventy-nine".