12735971726 has 4 divisors (see below), whose sum is σ = 19103957592. Its totient is φ = 6367985862.

The previous prime is 12735971701. The next prime is 12735971747. The reversal of 12735971726 is 62717953721.

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

It is a congruent number.

It is an unprimeable number.

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, 3183992930 + ... + 3183992933.

It is an arithmetic number, because the mean of its divisors is an integer number (4775989398).

Almost surely, 2^12735971726 is an apocalyptic number.

12735971726 is a deficient number, since it is larger than the sum of its proper divisors (6367985866).

12735971726 is an equidigital number, since it uses as much as digits as its factorization.

12735971726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6367985865.

The product of its digits is 1111320, while the sum is 50.

The spelling of 12735971726 in words is "twelve billion, seven hundred thirty-five million, nine hundred seventy-one thousand, seven hundred twenty-six".