12511216343 has 4 divisors (see below), whose sum is σ = 12513096240. Its totient is φ = 12509336448.

The previous prime is 12511216261. The next prime is 12511216363. The reversal of 12511216343 is 34361211521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12511216343 - 2⁸ = 12511216087 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 (12511216363) 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, 929930 + ... + 943287.

It is an arithmetic number, because the mean of its divisors is an integer number (3128274060).

Almost surely, 2^12511216343 is an apocalyptic number.

12511216343 is a deficient number, since it is larger than the sum of its proper divisors (1879897).

12511216343 is an equidigital number, since it uses as much as digits as its factorization.

12511216343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1879896.

The product of its digits is 4320, while the sum is 29.

Adding to 12511216343 its reverse (34361211521), we get a palindrome (46872427864).

The spelling of 12511216343 in words is "twelve billion, five hundred eleven million, two hundred sixteen thousand, three hundred forty-three".