12712557241 has 4 divisors (see below), whose sum is σ = 12715909092. Its totient is φ = 12709205392.

The previous prime is 12712557239. The next prime is 12712557269. The reversal of 12712557241 is 14275521721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14275521721 = 397 ⋅35958493.

It can be written as a sum of positive squares in 2 ways, for example, as 1074462841 + 11638094400 = 32779^2 + 107880^2 .

It is a cyclic number.

It is not a de Polignac number, because 12712557241 - 2¹ = 12712557239 is a prime.

It is a super-3 number, since 3×12712557241³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12712557241.

It is not an unprimeable number, because it can be changed into a prime (12712557541) 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, 1670230 + ... + 1677823.

It is an arithmetic number, because the mean of its divisors is an integer number (3178977273).

Almost surely, 2^12712557241 is an apocalyptic number.

It is an amenable number.

12712557241 is a deficient number, since it is larger than the sum of its proper divisors (3351851).

12712557241 is an equidigital number, since it uses as much as digits as its factorization.

12712557241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3351850.

The product of its digits is 39200, while the sum is 37.

The spelling of 12712557241 in words is "twelve billion, seven hundred twelve million, five hundred fifty-seven thousand, two hundred forty-one".