12757788706 has 12 divisors (see below), whose sum is σ = 20721970962. Its totient is φ = 5888210016.

The previous prime is 12757788679. The next prime is 12757788731. The reversal of 12757788706 is 60788775721.

It can be written as a sum of positive squares in 3 ways, for example, as 8567168481 + 4190620225 = 92559^2 + 64735^2 .

It is a super-2 number, since 2×12757788706² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18872131 + ... + 18872806.

Almost surely, 2^12757788706 is an apocalyptic number.

12757788706 is a deficient number, since it is larger than the sum of its proper divisors (7964182256).

12757788706 is a wasteful number, since it uses less digits than its factorization.

12757788706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37744965 (or 37744952 counting only the distinct ones).

The product of its (nonzero) digits is 9219840, while the sum is 58.

The spelling of 12757788706 in words is "twelve billion, seven hundred fifty-seven million, seven hundred eighty-eight thousand, seven hundred six".