123234445644 has 12 divisors (see below), whose sum is σ = 287547039864. Its totient is φ = 41078148544.

The previous prime is 123234445639. The next prime is 123234445651. The reversal of 123234445644 is 446544432321.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 123234445596 and 123234445605.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5134768557 + ... + 5134768580.

It is an arithmetic number, because the mean of its divisors is an integer number (23962253322).

Almost surely, 2^123234445644 is an apocalyptic number.

It is an amenable number.

123234445644 is an abundant number, since it is smaller than the sum of its proper divisors (164312594220).

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

123234445644 is a wasteful number, since it uses less digits than its factorization.

123234445644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10269537144 (or 10269537142 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 42.

Adding to 123234445644 its reverse (446544432321), we get a palindrome (569778877965).

The spelling of 123234445644 in words is "one hundred twenty-three billion, two hundred thirty-four million, four hundred forty-five thousand, six hundred forty-four".