12843774720 has 864 divisors, whose sum is σ = 55926194688. Its totient is φ = 2755067904.

The previous prime is 12843774719. The next prime is 12843774731. The reversal of 12843774720 is 2747734821.

12843774720 is a `hidden beast` number, since 128 + 437 + 74 + 7 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (864).

It is a super-2 number, since 2×12843774720² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 37013587 + ... + 37013933.

It is an arithmetic number, because the mean of its divisors is an integer number (64729392).

Almost surely, 2^12843774720 is an apocalyptic number.

12843774720 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 12843774720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27963097344).

12843774720 is an abundant number, since it is smaller than the sum of its proper divisors (43082419968).

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

12843774720 is an equidigital number, since it uses as much as digits as its factorization.

12843774720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407 (or 381 counting only the distinct ones).

The product of its (nonzero) digits is 526848, while the sum is 45.

The spelling of 12843774720 in words is "twelve billion, eight hundred forty-three million, seven hundred seventy-four thousand, seven hundred twenty".