123344555672 has 64 divisors (see below), whose sum is σ = 252703795680. Its totient is φ = 56099146752.

The previous prime is 123344555669. The next prime is 123344555681. The reversal of 123344555672 is 276555443321.

It is a happy number.

123344555672 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3408908 + ... + 3444900.

Almost surely, 2^123344555672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123344555672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126351897840).

123344555672 is an abundant number, since it is smaller than the sum of its proper divisors (129359240008).

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

123344555672 is a wasteful number, since it uses less digits than its factorization.

123344555672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36492 (or 36488 counting only the distinct ones).

The product of its digits is 3024000, while the sum is 47.

Adding to 123344555672 its reverse (276555443321), we get a palindrome (399899998993).

The spelling of 123344555672 in words is "one hundred twenty-three billion, three hundred forty-four million, five hundred fifty-five thousand, six hundred seventy-two".