12018379520 has 288 divisors, whose sum is σ = 35532241920. Its totient is φ = 3803627520.

The previous prime is 12018379469. The next prime is 12018379537. The reversal of 12018379520 is 2597381021.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5975315 + ... + 5977325.

It is an arithmetic number, because the mean of its divisors is an integer number (123375840).

Almost surely, 2^12018379520 is an apocalyptic number.

12018379520 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 12018379520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17766120960).

12018379520 is an abundant number, since it is smaller than the sum of its proper divisors (23513862400).

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

12018379520 is a wasteful number, since it uses less digits than its factorization.

12018379520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2091 (or 2077 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 38.

The spelling of 12018379520 in words is "twelve billion, eighteen million, three hundred seventy-nine thousand, five hundred twenty".