12537541539 has 12 divisors (see below), whose sum is σ = 18164498872. Its totient is φ = 8333107200.

The previous prime is 12537541529. The next prime is 12537541543. The reversal of 12537541539 is 93514573521.

12537541539 is a `hidden beast` number, since 1 + 2 + 5 + 3 + 75 + 41 + 539 = 666.

It is not a de Polignac number, because 12537541539 - 2⁵ = 12537541507 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12537541494 and 12537541503.

It is not an unprimeable number, because it can be changed into a prime (12537541529) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2101342 + ... + 2107299.

Almost surely, 2^12537541539 is an apocalyptic number.

12537541539 is a deficient number, since it is larger than the sum of its proper divisors (5626957333).

12537541539 is a wasteful number, since it uses less digits than its factorization.

12537541539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4208978 (or 4208975 counting only the distinct ones).

The product of its digits is 567000, while the sum is 45.

The spelling of 12537541539 in words is "twelve billion, five hundred thirty-seven million, five hundred forty-one thousand, five hundred thirty-nine".