12635261113 has 4 divisors (see below), whose sum is σ = 12642446080. Its totient is φ = 12628076148.

The previous prime is 12635261087. The next prime is 12635261153. The reversal of 12635261113 is 31116253621.

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 12635261113 - 2¹⁷ = 12635130041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12635261153) 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, 3589845 + ... + 3593362.

It is an arithmetic number, because the mean of its divisors is an integer number (3160611520).

Almost surely, 2^12635261113 is an apocalyptic number.

It is an amenable number.

12635261113 is a deficient number, since it is larger than the sum of its proper divisors (7184967).

12635261113 is an equidigital number, since it uses as much as digits as its factorization.

12635261113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7184966.

The product of its digits is 6480, while the sum is 31.

The spelling of 12635261113 in words is "twelve billion, six hundred thirty-five million, two hundred sixty-one thousand, one hundred thirteen".