12554122320 has 240 divisors, whose sum is σ = 45045599040. Its totient is φ = 3124002816.

The previous prime is 12554122303. The next prime is 12554122327. The reversal of 12554122320 is 2322145521.

12554122320 is a `hidden beast` number, since 12 + 5 + 5 + 412 + 232 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12554122327) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 909712 + ... + 923408.

It is an arithmetic number, because the mean of its divisors is an integer number (187689996).

Almost surely, 2^12554122320 is an apocalyptic number.

12554122320 is a gapful number since it is divisible by the number (10) 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 12554122320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22522799520).

12554122320 is an abundant number, since it is smaller than the sum of its proper divisors (32491476720).

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

12554122320 is a wasteful number, since it uses less digits than its factorization.

12554122320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13802 (or 13793 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 12554122320 its reverse (2322145521), we get a palindrome (14876267841).

The spelling of 12554122320 in words is "twelve billion, five hundred fifty-four million, one hundred twenty-two thousand, three hundred twenty".