12135732852 has 12 divisors (see below), whose sum is σ = 28316710016. Its totient is φ = 4045244280.

The previous prime is 12135732841. The next prime is 12135732859. The reversal of 12135732852 is 25823753121.

12135732852 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×12135732852² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12135732852.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12135732859) 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 3 ways as a sum of consecutive naturals, for example, 505655524 + ... + 505655547.

Almost surely, 2^12135732852 is an apocalyptic number.

12135732852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12135732852 is an abundant number, since it is smaller than the sum of its proper divisors (16180977164).

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

12135732852 is a wasteful number, since it uses less digits than its factorization.

12135732852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011311078 (or 1011311076 counting only the distinct ones).

The product of its digits is 100800, while the sum is 39.

The spelling of 12135732852 in words is "twelve billion, one hundred thirty-five million, seven hundred thirty-two thousand, eight hundred fifty-two".