12691269348 has 24 divisors (see below), whose sum is σ = 29945694240. Its totient is φ = 4182889920.

The previous prime is 12691269299. The next prime is 12691269439. The reversal of 12691269348 is 84396219621.

It is a super-2 number, since 2×12691269348² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12691269348.

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 7 ways as a sum of consecutive naturals, for example, 5940538 + ... + 5942673.

It is an arithmetic number, because the mean of its divisors is an integer number (1247737260).

Almost surely, 2^12691269348 is an apocalyptic number.

It is an amenable number.

12691269348 is an abundant number, since it is smaller than the sum of its proper divisors (17254424892).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12691269348 is a wasteful number, since it uses less digits than its factorization.

12691269348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11883307 (or 11883305 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 51.

The spelling of 12691269348 in words is "twelve billion, six hundred ninety-one million, two hundred sixty-nine thousand, three hundred forty-eight".