12523732539 has 8 divisors (see below), whose sum is σ = 16707213840. Its totient is φ = 8344703136.

The previous prime is 12523732537. The next prime is 12523732607. The reversal of 12523732539 is 93523732521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12523732539 - 2¹ = 12523732537 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12523732539.

It is not an unprimeable number, because it can be changed into a prime (12523732537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1106404 + ... + 1117665.

It is an arithmetic number, because the mean of its divisors is an integer number (2088401730).

Almost surely, 2^12523732539 is an apocalyptic number.

12523732539 is a deficient number, since it is larger than the sum of its proper divisors (4183481301).

12523732539 is a wasteful number, since it uses less digits than its factorization.

12523732539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2225949.

The product of its digits is 340200, while the sum is 42.

The spelling of 12523732539 in words is "twelve billion, five hundred twenty-three million, seven hundred thirty-two thousand, five hundred thirty-nine".