12126047808 has 112 divisors (see below), whose sum is σ = 36832194560. Its totient is φ = 3448963584.

The previous prime is 12126047807. The next prime is 12126047819. The reversal of 12126047808 is 80874062121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (112).

It is not an unprimeable number, because it can be changed into a prime (12126047807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 279483 + ... + 319941.

It is an arithmetic number, because the mean of its divisors is an integer number (328858880).

Almost surely, 2^12126047808 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 12126047808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18416097280).

12126047808 is an abundant number, since it is smaller than the sum of its proper divisors (24706146752).

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

12126047808 is a wasteful number, since it uses less digits than its factorization.

12126047808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40704 (or 40694 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 39.

The spelling of 12126047808 in words is "twelve billion, one hundred twenty-six million, forty-seven thousand, eight hundred eight".