12539804541 has 8 divisors (see below), whose sum is σ = 18239715744. Its totient is φ = 7599881520.

The previous prime is 12539804521. The next prime is 12539804549. The reversal of 12539804541 is 14540893521.

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

It is not a de Polignac number, because 12539804541 - 2⁷ = 12539804413 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12539804493 and 12539804502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12539804549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189997006 + ... + 189997071.

It is an arithmetic number, because the mean of its divisors is an integer number (2279964468).

Almost surely, 2^12539804541 is an apocalyptic number.

12539804541 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12539804541 is a deficient number, since it is larger than the sum of its proper divisors (5699911203).

12539804541 is a wasteful number, since it uses less digits than its factorization.

12539804541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379994091.

The product of its (nonzero) digits is 172800, while the sum is 42.

It can be divided in two parts, 1253980 and 4541, that added together give a palindrome (1258521).

The spelling of 12539804541 in words is "twelve billion, five hundred thirty-nine million, eight hundred four thousand, five hundred forty-one".