12682779692 has 24 divisors (see below), whose sum is σ = 25265302272. Its totient is φ = 5514251600.

The previous prime is 12682779647. The next prime is 12682779701. The reversal of 12682779692 is 29697728621.

It is a happy number.

It is a super-2 number, since 2×12682779692² (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 7 ways as a sum of consecutive naturals, for example, 6265184 + ... + 6267207.

It is an arithmetic number, because the mean of its divisors is an integer number (1052720928).

Almost surely, 2^12682779692 is an apocalyptic number.

It is an amenable number.

12682779692 is a deficient number, since it is larger than the sum of its proper divisors (12582522580).

12682779692 is a wasteful number, since it uses less digits than its factorization.

12682779692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12532429 (or 12532427 counting only the distinct ones).

The product of its digits is 9144576, while the sum is 59.

The spelling of 12682779692 in words is "twelve billion, six hundred eighty-two million, seven hundred seventy-nine thousand, six hundred ninety-two".