12013478400 has 960 divisors, whose sum is σ = 52608061440. Its totient is φ = 2339635200.

The previous prime is 12013478377. The next prime is 12013478471. The reversal of 12013478400 is 487431021.

It is a tau number, because it is divible by the number of its divisors (960).

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 (11) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 50265481 + ... + 50265719.

It is an arithmetic number, because the mean of its divisors is an integer number (54800064).

Almost surely, 2^12013478400 is an apocalyptic number.

12013478400 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 12013478400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26304030720).

12013478400 is an abundant number, since it is smaller than the sum of its proper divisors (40594583040).

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

12013478400 is a wasteful number, since it uses less digits than its factorization.

12013478400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305 (or 284 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The spelling of 12013478400 in words is "twelve billion, thirteen million, four hundred seventy-eight thousand, four hundred".