12669000000 has 392 divisors, whose sum is σ = 43338195264. Its totient is φ = 3264000000.

The previous prime is 12668999971. The next prime is 12669000011. The reversal of 12669000000 is 96621.

It is a super-2 number, since 2×12669000000² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 122999949 + ... + 123000051.

Almost surely, 2^12669000000 is an apocalyptic number.

12669000000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12669000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21669097632).

12669000000 is an abundant number, since it is smaller than the sum of its proper divisors (30669195264).

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

12669000000 is an frugal number, since it uses more digits than its factorization.

12669000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189 (or 154 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 12669000000 its reverse (96621), we get a palindrome (12669096621).

The spelling of 12669000000 in words is "twelve billion, six hundred sixty-nine million", and thus it is an aban number.