12516263611 has 4 divisors (see below), whose sum is σ = 12518806824. Its totient is φ = 12513720400.

The previous prime is 12516263597. The next prime is 12516263621. The reversal of 12516263611 is 11636261521.

12516263611 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12516263611 - 2⁷ = 12516263483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12516263621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1264210 + ... + 1274071.

It is an arithmetic number, because the mean of its divisors is an integer number (3129701706).

Almost surely, 2^12516263611 is an apocalyptic number.

12516263611 is a deficient number, since it is larger than the sum of its proper divisors (2543213).

12516263611 is an equidigital number, since it uses as much as digits as its factorization.

12516263611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2543212.

The product of its digits is 12960, while the sum is 34.

The spelling of 12516263611 in words is "twelve billion, five hundred sixteen million, two hundred sixty-three thousand, six hundred eleven".