12009458916 has 144 divisors (see below), whose sum is σ = 37412793600. Its totient is φ = 3163090176.

The previous prime is 12009458887. The next prime is 12009458921. The reversal of 12009458916 is 61985490021.

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, 3008650 + ... + 3012638.

Almost surely, 2^12009458916 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12009458916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18706396800).

12009458916 is an abundant number, since it is smaller than the sum of its proper divisors (25403334684).

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

12009458916 is a wasteful number, since it uses less digits than its factorization.

12009458916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4938 (or 4933 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The spelling of 12009458916 in words is "twelve billion, nine million, four hundred fifty-eight thousand, nine hundred sixteen".