12289612052 has 12 divisors (see below), whose sum is σ = 22771928340. Its totient is φ = 5783346816.

The previous prime is 12289612051. The next prime is 12289612063. The reversal of 12289612052 is 25021698221.

It can be written as a sum of positive squares in 2 ways, for example, as 6677504656 + 5612107396 = 81716^2 + 74914^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12289611997 and 12289612015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12289612051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90364727 + ... + 90364862.

It is an arithmetic number, because the mean of its divisors is an integer number (1897660695).

Almost surely, 2^12289612052 is an apocalyptic number.

It is an amenable number.

12289612052 is a deficient number, since it is larger than the sum of its proper divisors (10482316288).

12289612052 is a wasteful number, since it uses less digits than its factorization.

12289612052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180729610 (or 180729608 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 38.

The spelling of 12289612052 in words is "twelve billion, two hundred eighty-nine million, six hundred twelve thousand, fifty-two".