123344444445 has 16 divisors (see below), whose sum is σ = 204156322560. Its totient is φ = 63515299904.

The previous prime is 123344444437. The next prime is 123344444449. The reversal of 123344444445 is 544444443321.

It is a cyclic number.

It is not a de Polignac number, because 123344444445 - 2³ = 123344444437 is a prime.

It is a plaindrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 123344444397 and 123344444406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123344444449) 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 15 ways as a sum of consecutive naturals, for example, 141774789 + ... + 141775658.

It is an arithmetic number, because the mean of its divisors is an integer number (12759770160).

Almost surely, 2^123344444445 is an apocalyptic number.

123344444445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123344444445 is a deficient number, since it is larger than the sum of its proper divisors (80811878115).

123344444445 is a wasteful number, since it uses less digits than its factorization.

123344444445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283550484.

The product of its digits is 1474560, while the sum is 42.

Adding to 123344444445 its reverse (544444443321), we get a palindrome (667788887766).

The spelling of 123344444445 in words is "one hundred twenty-three billion, three hundred forty-four million, four hundred forty-four thousand, four hundred forty-five".