12538842441 has 32 divisors (see below), whose sum is σ = 17228851200. Its totient is φ = 8107042944.

The previous prime is 12538842431. The next prime is 12538842493. The reversal of 12538842441 is 14424883521.

It is not a de Polignac number, because 12538842441 - 2¹⁰ = 12538841417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12538842393 and 12538842402.

It is not an unprimeable number, because it can be changed into a prime (12538842431) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20321965 + ... + 20322581.

It is an arithmetic number, because the mean of its divisors is an integer number (538401600).

Almost surely, 2^12538842441 is an apocalyptic number.

It is an amenable number.

12538842441 is a deficient number, since it is larger than the sum of its proper divisors (4690008759).

12538842441 is a wasteful number, since it uses less digits than its factorization.

12538842441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1525.

The product of its digits is 245760, while the sum is 42.

The spelling of 12538842441 in words is "twelve billion, five hundred thirty-eight million, eight hundred forty-two thousand, four hundred forty-one".