12671139800 has 96 divisors (see below), whose sum is σ = 32168588400. Its totient is φ = 4603392000.

The previous prime is 12671139787. The next prime is 12671139809. The reversal of 12671139800 is 893117621.

It is a super-2 number, since 2×12671139800² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12671139809) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 3256256 + ... + 3260144.

Almost surely, 2^12671139800 is an apocalyptic number.

12671139800 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 12671139800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16084294200).

12671139800 is an abundant number, since it is smaller than the sum of its proper divisors (19497448600).

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

12671139800 is a wasteful number, since it uses less digits than its factorization.

12671139800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5397 (or 5388 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 38.

The spelling of 12671139800 in words is "twelve billion, six hundred seventy-one million, one hundred thirty-nine thousand, eight hundred".