12636771516 has 36 divisors (see below), whose sum is σ = 31947525792. Its totient is φ = 4211653824.

The previous prime is 12636771491. The next prime is 12636771569. The reversal of 12636771516 is 61517763621.

12636771516 is a `hidden beast` number, since 1 + 2 + 6 + 3 + 67 + 71 + 516 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

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, 280621 + ... + 322523.

It is an arithmetic number, because the mean of its divisors is an integer number (887431272).

Almost surely, 2^12636771516 is an apocalyptic number.

It is an amenable number.

12636771516 is an abundant number, since it is smaller than the sum of its proper divisors (19310754276).

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

12636771516 is a wasteful number, since it uses less digits than its factorization.

12636771516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50290 (or 50285 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The spelling of 12636771516 in words is "twelve billion, six hundred thirty-six million, seven hundred seventy-one thousand, five hundred sixteen".