123111444480 has 104 divisors (see below), whose sum is σ = 393908728512. Its totient is φ = 32829702144.

The previous prime is 123111444413. The next prime is 123111444481. The reversal of 123111444480 is 84444111321.

It is not an unprimeable number, because it can be changed into a prime (123111444481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 940444 + ... + 1063323.

It is an arithmetic number, because the mean of its divisors is an integer number (3787583928).

Almost surely, 2^123111444480 is an apocalyptic number.

123111444480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123111444480 is an abundant number, since it is smaller than the sum of its proper divisors (270797284032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123111444480 is an equidigital number, since it uses as much as digits as its factorization.

123111444480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2003799 (or 2003777 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 33.

The spelling of 123111444480 in words is "one hundred twenty-three billion, one hundred eleven million, four hundred forty-four thousand, four hundred eighty".