12568669869 has 16 divisors (see below), whose sum is σ = 19159936640. Its totient is φ = 7179217920.

The previous prime is 12568669793. The next prime is 12568669913. The reversal of 12568669869 is 96896686521.

It is a happy number.

It is not a de Polignac number, because 12568669869 - 2²⁷ = 12434452141 is a prime.

It is a super-2 number, since 2×12568669869² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12568669469) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65764 + ... + 171645.

It is an arithmetic number, because the mean of its divisors is an integer number (1197496040).

Almost surely, 2^12568669869 is an apocalyptic number.

It is an amenable number.

12568669869 is a deficient number, since it is larger than the sum of its proper divisors (6591266771).

12568669869 is a wasteful number, since it uses less digits than its factorization.

12568669869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239940.

The product of its digits is 67184640, while the sum is 66.

The spelling of 12568669869 in words is "twelve billion, five hundred sixty-eight million, six hundred sixty-nine thousand, eight hundred sixty-nine".