12309445008 has 60 divisors (see below), whose sum is σ = 39370688448. Its totient is φ = 3516984000.

The previous prime is 12309445007. The next prime is 12309445021. The reversal of 12309445008 is 80054490321.

It is a super-2 number, since 2×12309445008² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (12309445007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6104868 + ... + 6106883.

Almost surely, 2^12309445008 is an apocalyptic number.

12309445008 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12309445008 is an abundant number, since it is smaller than the sum of its proper divisors (27061243440).

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

12309445008 is a wasteful number, since it uses less digits than its factorization.

12309445008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12211772 (or 12211763 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 12309445008 in words is "twelve billion, three hundred nine million, four hundred forty-five thousand, eight".