123355306444 has 12 divisors (see below), whose sum is σ = 215875497600. Its totient is φ = 61676592848.

The previous prime is 123355306441. The next prime is 123355306463. The reversal of 123355306444 is 444603553321.

It is a junction number, because it is equal to n+sod(n) for n = 123355306397 and 123355306406.

It is not an unprimeable number, because it can be changed into a prime (123355306441) 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, 34197 + ... + 497875.

It is an arithmetic number, because the mean of its divisors is an integer number (17989624800).

Almost surely, 2^123355306444 is an apocalyptic number.

It is an amenable number.

123355306444 is a deficient number, since it is larger than the sum of its proper divisors (92520191156).

123355306444 is a wasteful number, since it uses less digits than its factorization.

123355306444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530192 (or 530190 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 40.

Adding to 123355306444 its reverse (444603553321), we get a palindrome (567958859765).

The spelling of 123355306444 in words is "one hundred twenty-three billion, three hundred fifty-five million, three hundred six thousand, four hundred forty-four".