12606445237 has 4 divisors (see below), whose sum is σ = 12610323820. Its totient is φ = 12602566656.

The previous prime is 12606445219. The next prime is 12606445259. The reversal of 12606445237 is 73254460621.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12266448516 + 339996721 = 110754^2 + 18439^2 .

It is a cyclic number.

It is not a de Polignac number, because 12606445237 - 2¹¹ = 12606443189 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12606445237.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12606445207) 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, 1934412 + ... + 1940917.

It is an arithmetic number, because the mean of its divisors is an integer number (3152580955).

Almost surely, 2^12606445237 is an apocalyptic number.

It is an amenable number.

12606445237 is a deficient number, since it is larger than the sum of its proper divisors (3878583).

12606445237 is an equidigital number, since it uses as much as digits as its factorization.

12606445237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3878582.

The product of its (nonzero) digits is 241920, while the sum is 40.

The spelling of 12606445237 in words is "twelve billion, six hundred six million, four hundred forty-five thousand, two hundred thirty-seven".