12738475241 has 6 divisors (see below), whose sum is σ = 13531875390. Its totient is φ = 11989152896.

The previous prime is 12738475229. The next prime is 12738475249. The reversal of 12738475241 is 14257483721.

It can be written as a sum of positive squares in 3 ways, for example, as 6459497641 + 6278977600 = 80371^2 + 79240^2 .

It is a de Polignac number, because none of the positive numbers 2^k-12738475241 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12738475192 and 12738475201.

It is not an unprimeable number, because it can be changed into a prime (12738475249) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22038596 + ... + 22039173.

It is an arithmetic number, because the mean of its divisors is an integer number (2255312565).

Almost surely, 2^12738475241 is an apocalyptic number.

It is an amenable number.

12738475241 is a deficient number, since it is larger than the sum of its proper divisors (793400149).

12738475241 is an equidigital number, since it uses as much as digits as its factorization.

12738475241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44077803 (or 44077786 counting only the distinct ones).

The product of its digits is 376320, while the sum is 44.

The spelling of 12738475241 in words is "twelve billion, seven hundred thirty-eight million, four hundred seventy-five thousand, two hundred forty-one".