12605231974 has 4 divisors (see below), whose sum is σ = 18907847964. Its totient is φ = 6302615986.

The previous prime is 12605231971. The next prime is 12605231981. The reversal of 12605231974 is 47913250621.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12605231971) 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, 3151307992 + ... + 3151307995.

It is an arithmetic number, because the mean of its divisors is an integer number (4726961991).

Almost surely, 2^12605231974 is an apocalyptic number.

12605231974 is a deficient number, since it is larger than the sum of its proper divisors (6302615990).

12605231974 is an equidigital number, since it uses as much as digits as its factorization.

12605231974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6302615989.

The product of its (nonzero) digits is 90720, while the sum is 40.

The spelling of 12605231974 in words is "twelve billion, six hundred five million, two hundred thirty-one thousand, nine hundred seventy-four".