12765742426 has 8 divisors (see below), whose sum is σ = 19462525524. Its totient is φ = 6278233920.

The previous prime is 12765742403. The next prime is 12765742489. The reversal of 12765742426 is 62424756721.

It can be written as a sum of positive squares in 2 ways, for example, as 12531683025 + 234059401 = 111945^2 + 15299^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 in 3 ways as a sum of consecutive naturals, for example, 52318495 + ... + 52318738.

Almost surely, 2^12765742426 is an apocalyptic number.

12765742426 is a deficient number, since it is larger than the sum of its proper divisors (6696783098).

12765742426 is a wasteful number, since it uses less digits than its factorization.

12765742426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104637296.

The product of its digits is 1128960, while the sum is 46.

The spelling of 12765742426 in words is "twelve billion, seven hundred sixty-five million, seven hundred forty-two thousand, four hundred twenty-six".