12439000261 has 8 divisors (see below), whose sum is σ = 12537604800. Its totient is φ = 12340757088.

The previous prime is 12439000241. The next prime is 12439000271. The reversal of 12439000261 is 16200093421.

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 12439000261 - 2⁵ = 12439000229 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 (12439000241) 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, 21016 + ... + 159121.

It is an arithmetic number, because the mean of its divisors is an integer number (1567200600).

Almost surely, 2^12439000261 is an apocalyptic number.

It is an amenable number.

12439000261 is a deficient number, since it is larger than the sum of its proper divisors (98604539).

12439000261 is a wasteful number, since it uses less digits than its factorization.

12439000261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180683.

The product of its (nonzero) digits is 2592, while the sum is 28.

Adding to 12439000261 its reverse (16200093421), we get a palindrome (28639093682).

The spelling of 12439000261 in words is "twelve billion, four hundred thirty-nine million, two hundred sixty-one", and thus it is an aban number.