55123450112 has 144 divisors (see below), whose sum is σ = 119285550720. Its totient is φ = 25353732096.

The previous prime is 55123450069. The next prime is 55123450121. The reversal of 55123450112 is 21105432155.

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, 19387763 + ... + 19390605.

It is an arithmetic number, because the mean of its divisors is an integer number (828371880).

Almost surely, 2^55123450112 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 55123450112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59642775360).

55123450112 is an abundant number, since it is smaller than the sum of its proper divisors (64162100608).

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

55123450112 is a wasteful number, since it uses less digits than its factorization.

55123450112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3008 (or 2994 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 29.

Adding to 55123450112 its reverse (21105432155), we get a palindrome (76228882267).

The spelling of 55123450112 in words is "fifty-five billion, one hundred twenty-three million, four hundred fifty thousand, one hundred twelve".