12690852449 has 4 divisors (see below), whose sum is σ = 13844566320. Its totient is φ = 11537138580.

The previous prime is 12690852437. The next prime is 12690852463. The reversal of 12690852449 is 94425809621.

12690852449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-12690852449 is a prime.

It is a super-2 number, since 2×12690852449² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12690852397 and 12690852406.

It is not an unprimeable number, because it can be changed into a prime (12690852479) 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, 576856919 + ... + 576856940.

It is an arithmetic number, because the mean of its divisors is an integer number (3461141580).

Almost surely, 2^12690852449 is an apocalyptic number.

It is an amenable number.

12690852449 is a deficient number, since it is larger than the sum of its proper divisors (1153713871).

12690852449 is a wasteful number, since it uses less digits than its factorization.

12690852449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1153713870.

The product of its (nonzero) digits is 1244160, while the sum is 50.

The spelling of 12690852449 in words is "twelve billion, six hundred ninety million, eight hundred fifty-two thousand, four hundred forty-nine".