12539012539 has 8 divisors (see below), whose sum is σ = 12665450160. Its totient is φ = 12412620000.

The previous prime is 12539012537. The next prime is 12539012573. The reversal of 12539012539 is 93521093521.

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

It is a cyclic number.

It is not a de Polignac number, because 12539012539 - 2¹ = 12539012537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12539012537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 993732 + ... + 1006270.

It is an arithmetic number, because the mean of its divisors is an integer number (1583181270).

Almost surely, 2^12539012539 is an apocalyptic number.

12539012539 is a deficient number, since it is larger than the sum of its proper divisors (126437621).

12539012539 is a wasteful number, since it uses less digits than its factorization.

12539012539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22541.

The product of its (nonzero) digits is 72900, while the sum is 40.

The spelling of 12539012539 in words is "twelve billion, five hundred thirty-nine million, twelve thousand, five hundred thirty-nine".