12636530624 has 56 divisors (see below), whose sum is σ = 25712013600. Its totient is φ = 6158213120.

The previous prime is 12636530623. The next prime is 12636530629. The reversal of 12636530624 is 42603563621.

It is a happy number.

It is a super-2 number, since 2×12636530624² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12636530623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4089272 + ... + 4092360.

It is an arithmetic number, because the mean of its divisors is an integer number (459143100).

Almost surely, 2^12636530624 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12636530624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12856006800).

12636530624 is an abundant number, since it is smaller than the sum of its proper divisors (13075482976).

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

12636530624 is a wasteful number, since it uses less digits than its factorization.

12636530624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4701 (or 4691 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 38.

The spelling of 12636530624 in words is "twelve billion, six hundred thirty-six million, five hundred thirty thousand, six hundred twenty-four".