12505741966 has 4 divisors (see below), whose sum is σ = 18758612952. Its totient is φ = 6252870982.

The previous prime is 12505741939. The next prime is 12505741967. The reversal of 12505741966 is 66914750521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66914750521 = 9277 ⋅7212973.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12505741967) 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 as a sum of consecutive naturals, namely, 3126435490 + ... + 3126435493.

It is an arithmetic number, because the mean of its divisors is an integer number (4689653238).

Almost surely, 2^12505741966 is an apocalyptic number.

12505741966 is a deficient number, since it is larger than the sum of its proper divisors (6252870986).

12505741966 is an equidigital number, since it uses as much as digits as its factorization.

12505741966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6252870985.

The product of its (nonzero) digits is 453600, while the sum is 46.

The spelling of 12505741966 in words is "twelve billion, five hundred five million, seven hundred forty-one thousand, nine hundred sixty-six".