123354544656 has 160 divisors (see below), whose sum is σ = 382303531008. Its totient is φ = 33509583360.

The previous prime is 123354544631. The next prime is 123354544699. The reversal of 123354544656 is 656445453321.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1242786 + ... + 1338366.

Almost surely, 2^123354544656 is an apocalyptic number.

123354544656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123354544656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191151765504).

123354544656 is an abundant number, since it is smaller than the sum of its proper divisors (258948986352).

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

123354544656 is a wasteful number, since it uses less digits than its factorization.

123354544656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95789 (or 95783 counting only the distinct ones).

The product of its digits is 5184000, while the sum is 48.

Adding to 123354544656 its reverse (656445453321), we get a palindrome (779799997977).

The spelling of 123354544656 in words is "one hundred twenty-three billion, three hundred fifty-four million, five hundred forty-four thousand, six hundred fifty-six".