12438148741 has 4 divisors (see below), whose sum is σ = 12439163500. Its totient is φ = 12437133984.

The previous prime is 12438148729. The next prime is 12438148747. The reversal of 12438148741 is 14784183421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4820524900 + 7617623841 = 69430^2 + 87279^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12438148741 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 (12438148747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 488766 + ... + 513583.

It is an arithmetic number, because the mean of its divisors is an integer number (3109790875).

Almost surely, 2^12438148741 is an apocalyptic number.

It is an amenable number.

12438148741 is a deficient number, since it is larger than the sum of its proper divisors (1014759).

12438148741 is a wasteful number, since it uses less digits than its factorization.

12438148741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1014758.

The product of its digits is 172032, while the sum is 43.

The spelling of 12438148741 in words is "twelve billion, four hundred thirty-eight million, one hundred forty-eight thousand, seven hundred forty-one".