12545343461 has 4 divisors (see below), whose sum is σ = 14337535392. Its totient is φ = 10753151532.

The previous prime is 12545343431. The next prime is 12545343463. The reversal of 12545343461 is 16434354521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12545343461 - 2²² = 12541149157 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 (12545343463) 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, 896095955 + ... + 896095968.

It is an arithmetic number, because the mean of its divisors is an integer number (3584383848).

Almost surely, 2^12545343461 is an apocalyptic number.

It is an amenable number.

12545343461 is a deficient number, since it is larger than the sum of its proper divisors (1792191931).

12545343461 is an equidigital number, since it uses as much as digits as its factorization.

12545343461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1792191930.

The product of its digits is 172800, while the sum is 38.

Adding to 12545343461 its reverse (16434354521), we get a palindrome (28979697982).

The spelling of 12545343461 in words is "twelve billion, five hundred forty-five million, three hundred forty-three thousand, four hundred sixty-one".