12526661644241 has 8 divisors (see below), whose sum is σ = 12530729905320. Its totient is φ = 12522593653632.

The previous prime is 12526661644163. The next prime is 12526661644249. The reversal of 12526661644241 is 14244616662521.

It can be written as a sum of positive squares in 4 ways, for example, as 38064010000 + 12488597634241 = 195100^2 + 3533921^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12526661644241 is a prime.

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 12526661644241.

It is not an unprimeable number, because it can be changed into a prime (12526661644249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134803991 + ... + 134896883.

It is an arithmetic number, because the mean of its divisors is an integer number (1566341238165).

Almost surely, 2^{12526661644241} is an apocalyptic number.

It is an amenable number.

12526661644241 is a deficient number, since it is larger than the sum of its proper divisors (4068261079).

12526661644241 is an equidigital number, since it uses as much as digits as its factorization.

12526661644241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135235.

The product of its digits is 3317760, while the sum is 50.

The spelling of 12526661644241 in words is "twelve trillion, five hundred twenty-six billion, six hundred sixty-one million, six hundred forty-four thousand, two hundred forty-one".