12049866072 has 128 divisors (see below), whose sum is σ = 34443595200. Its totient is φ = 3900441600.

The previous prime is 12049866071. The next prime is 12049866077. The reversal of 12049866072 is 27066894021.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12049866071) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5281572 + ... + 5283852.

Almost surely, 2^12049866072 is an apocalyptic number.

12049866072 is a gapful number since it is divisible by the number (12) 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 12049866072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17221797600).

12049866072 is an abundant number, since it is smaller than the sum of its proper divisors (22393729128).

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

12049866072 is a wasteful number, since it uses less digits than its factorization.

12049866072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2994 (or 2984 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 12049866072 in words is "twelve billion, forty-nine million, eight hundred sixty-six thousand, seventy-two".