12006537237 has 6 divisors (see below), whose sum is σ = 17342776022. Its totient is φ = 8004358152.

The previous prime is 12006537223. The next prime is 12006537239. The reversal of 12006537237 is 73273560021.

It can be written as a sum of positive squares in only one way, i.e., 11251057041 + 755480196 = 106071^2 + 27486^2 .

It is not a de Polignac number, because 12006537237 - 2⁶ = 12006537173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12006537239) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 667029838 + ... + 667029855.

Almost surely, 2^12006537237 is an apocalyptic number.

It is an amenable number.

12006537237 is a deficient number, since it is larger than the sum of its proper divisors (5336238785).

12006537237 is a wasteful number, since it uses less digits than its factorization.

12006537237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1334059699 (or 1334059696 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 36.

The spelling of 12006537237 in words is "twelve billion, six million, five hundred thirty-seven thousand, two hundred thirty-seven".