12605941249 has 4 divisors (see below), whose sum is σ = 13751935920. Its totient is φ = 11459946580.

The previous prime is 12605941247. The next prime is 12605941261. The reversal of 12605941249 is 94214950621.

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 cyclic number.

It is not a de Polignac number, because 12605941249 - 2¹ = 12605941247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12605941247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 572997319 + ... + 572997340.

It is an arithmetic number, because the mean of its divisors is an integer number (3437983980).

Almost surely, 2^12605941249 is an apocalyptic number.

It is an amenable number.

12605941249 is a deficient number, since it is larger than the sum of its proper divisors (1145994671).

12605941249 is a wasteful number, since it uses less digits than its factorization.

12605941249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1145994670.

The product of its (nonzero) digits is 155520, while the sum is 43.

The spelling of 12605941249 in words is "twelve billion, six hundred five million, nine hundred forty-one thousand, two hundred forty-nine".