12118734720 has 384 divisors, whose sum is σ = 43299416160. Its totient is φ = 3121348608.

The previous prime is 12118734703. The next prime is 12118734739. The reversal of 12118734720 is 2743781121.

12118734720 is a `hidden beast` number, since 1 + 2 + 1 + 187 + 3 + 472 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

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 47 ways as a sum of consecutive naturals, for example, 27987624 + ... + 27988056.

Almost surely, 2^12118734720 is an apocalyptic number.

12118734720 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 12118734720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21649708080).

12118734720 is an abundant number, since it is smaller than the sum of its proper divisors (31180681440).

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

12118734720 is a wasteful number, since it uses less digits than its factorization.

12118734720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614 (or 599 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The spelling of 12118734720 in words is "twelve billion, one hundred eighteen million, seven hundred thirty-four thousand, seven hundred twenty".