12669855269 has 16 divisors (see below), whose sum is σ = 13472406000. Its totient is φ = 11895776256.

The previous prime is 12669855257. The next prime is 12669855281. The reversal of 12669855269 is 96255896621.

It is an interprime number because it is at equal distance from previous prime (12669855257) and next prime (12669855281).

It can be written as a sum of positive squares in 8 ways, for example, as 351075169 + 12318780100 = 18737^2 + 110990^2 .

It is a cyclic number.

It is not a de Polignac number, because 12669855269 - 2²⁸ = 12401419813 is a prime.

It is a super-4 number, since 4×12669855269⁴ (a number of 42 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12669851269) 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, 137207 + ... + 210155.

It is an arithmetic number, because the mean of its divisors is an integer number (842025375).

Almost surely, 2^12669855269 is an apocalyptic number.

It is an amenable number.

12669855269 is a deficient number, since it is larger than the sum of its proper divisors (802550731).

12669855269 is a wasteful number, since it uses less digits than its factorization.

12669855269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73144.

The product of its digits is 13996800, while the sum is 59.

The spelling of 12669855269 in words is "twelve billion, six hundred sixty-nine million, eight hundred fifty-five thousand, two hundred sixty-nine".