12013345008 has 160 divisors (see below), whose sum is σ = 39525248000. Its totient is φ = 3422248704.

The previous prime is 12013344983. The next prime is 12013345013. The reversal of 12013345008 is 80054331021.

It is a happy number.

12013345008 is a `hidden beast` number, since 1 + 20 + 133 + 4 + 500 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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, 1049685 + ... + 1061067.

It is an arithmetic number, because the mean of its divisors is an integer number (247032800).

Almost surely, 2^12013345008 is an apocalyptic number.

12013345008 is a gapful number since it is divisible by the number (18) 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 12013345008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19762624000).

12013345008 is an abundant number, since it is smaller than the sum of its proper divisors (27511902992).

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

12013345008 is a wasteful number, since it uses less digits than its factorization.

12013345008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11756 (or 11744 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

Adding to 12013345008 its reverse (80054331021), we get a palindrome (92067676029).

The spelling of 12013345008 in words is "twelve billion, thirteen million, three hundred forty-five thousand, eight".