12173444400 has 480 divisors, whose sum is σ = 44938512640. Its totient is φ = 2791895040.

The previous prime is 12173444383. The next prime is 12173444441. The reversal of 12173444400 is 444437121.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 19858494 + ... + 19859106.

Almost surely, 2^12173444400 is an apocalyptic number.

12173444400 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 12173444400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22469256320).

12173444400 is an abundant number, since it is smaller than the sum of its proper divisors (32765068240).

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

12173444400 is a wasteful number, since it uses less digits than its factorization.

12173444400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733 (or 722 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 30.

The spelling of 12173444400 in words is "twelve billion, one hundred seventy-three million, four hundred forty-four thousand, four hundred".