1123359451200 has 2016 divisors, whose sum is σ = 5024221762560. Its totient is φ = 241416806400.

The previous prime is 1123359451169. The next prime is 1123359451211. The reversal of 1123359451200 is 21549533211.

It is a happy number.

1123359451200 is a `hidden beast` number, since 1 + 1 + 23 + 35 + 94 + 512 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (2016).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 3393835035 + ... + 3393835365.

Almost surely, 2^{1123359451200} is an apocalyptic number.

1123359451200 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 1123359451200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2512110881280).

1123359451200 is an abundant number, since it is smaller than the sum of its proper divisors (3900862311360).

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

1123359451200 is a wasteful number, since it uses less digits than its factorization.

1123359451200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447 (or 420 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The spelling of 1123359451200 in words is "one trillion, one hundred twenty-three billion, three hundred fifty-nine million, four hundred fifty-one thousand, two hundred".