12636252036 has 36 divisors (see below), whose sum is σ = 31992315264. Its totient is φ = 4205401200.

The previous prime is 12636252001. The next prime is 12636252037. The reversal of 12636252036 is 63025263621.

12636252036 is a `hidden beast` number, since 1 + 2 + 6 + 3 + 625 + 20 + 3 + 6 = 666.

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

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (12636252037) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 255420 + ... + 300851.

It is an arithmetic number, because the mean of its divisors is an integer number (888675424).

Almost surely, 2^12636252036 is an apocalyptic number.

It is an amenable number.

12636252036 is an abundant number, since it is smaller than the sum of its proper divisors (19356063228).

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

12636252036 is a wasteful number, since it uses less digits than its factorization.

12636252036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556912 (or 556907 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The spelling of 12636252036 in words is "twelve billion, six hundred thirty-six million, two hundred fifty-two thousand, thirty-six".