12561460241 has 8 divisors (see below), whose sum is σ = 13816663968. Its totient is φ = 11419508100.

The previous prime is 12561460231. The next prime is 12561460271. The reversal of 12561460241 is 14206416521.

It is not a de Polignac number, because 12561460241 - 2¹⁰ = 12561459217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12561460198 and 12561460207.

It is not an unprimeable number, because it can be changed into a prime (12561460231) 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, 4717475 + ... + 4720136.

It is an arithmetic number, because the mean of its divisors is an integer number (1727082996).

Almost surely, 2^12561460241 is an apocalyptic number.

12561460241 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12561460241 is a deficient number, since it is larger than the sum of its proper divisors (1255203727).

12561460241 is an frugal number, since it uses more digits than its factorization.

12561460241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9437644 (or 9437622 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

Adding to 12561460241 its reverse (14206416521), we get a palindrome (26767876762).

The spelling of 12561460241 in words is "twelve billion, five hundred sixty-one million, four hundred sixty thousand, two hundred forty-one".