12051537072 has 80 divisors (see below), whose sum is σ = 32042258688. Its totient is φ = 3900960000.

The previous prime is 12051537067. The next prime is 12051537083. The reversal of 12051537072 is 27073515021.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 340197 + ... + 373947.

Almost surely, 2^12051537072 is an apocalyptic number.

12051537072 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 12051537072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16021129344).

12051537072 is an abundant number, since it is smaller than the sum of its proper divisors (19990721616).

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

12051537072 is a wasteful number, since it uses less digits than its factorization.

12051537072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33978 (or 33972 counting only the distinct ones).

The product of its (nonzero) digits is 14700, while the sum is 33.

The spelling of 12051537072 in words is "twelve billion, fifty-one million, five hundred thirty-seven thousand, seventy-two".