12613887306 has 24 divisors (see below), whose sum is σ = 27334351044. Its totient is φ = 4203973440.

The previous prime is 12613887287. The next prime is 12613887313. The reversal of 12613887306 is 60378831621.

12613887306 is a `hidden beast` number, since 1 + 261 + 3 + 8 + 87 + 306 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 10253385081 + 2360502225 = 101259^2 + 48585^2 .

It is a super-2 number, since 2×12613887306² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71920 + ... + 174356.

Almost surely, 2^12613887306 is an apocalyptic number.

12613887306 is an abundant number, since it is smaller than the sum of its proper divisors (14720463738).

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

12613887306 is a wasteful number, since it uses less digits than its factorization.

12613887306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109286 (or 109283 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

It can be divided in two parts, 126138 and 87306, that added together give a square (213444 = 462²).

The spelling of 12613887306 in words is "twelve billion, six hundred thirteen million, eight hundred eighty-seven thousand, three hundred six".