12694599618 has 32 divisors (see below), whose sum is σ = 28297563840. Its totient is φ = 3773007360.

The previous prime is 12694599613. The next prime is 12694599647. The reversal of 12694599618 is 81699549621.

12694599618 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12694599618² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12694599613) 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 15 ways as a sum of consecutive naturals, for example, 3273243 + ... + 3277118.

It is an arithmetic number, because the mean of its divisors is an integer number (884298870).

Almost surely, 2^12694599618 is an apocalyptic number.

12694599618 is an abundant number, since it is smaller than the sum of its proper divisors (15602964222).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12694599618 is a wasteful number, since it uses less digits than its factorization.

12694599618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6550402.

The product of its digits is 8398080, while the sum is 60.

The spelling of 12694599618 in words is "twelve billion, six hundred ninety-four million, five hundred ninety-nine thousand, six hundred eighteen".