12273919872 has 128 divisors (see below), whose sum is σ = 33047632800. Its totient is φ = 4035870720.

The previous prime is 12273919843. The next prime is 12273919873. The reversal of 12273919872 is 27891937221.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12273919873) 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, 9521404 + ... + 9522692.

Almost surely, 2^12273919872 is an apocalyptic number.

12273919872 is a gapful number since it is divisible by the number (12) 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 12273919872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16523816400).

12273919872 is an abundant number, since it is smaller than the sum of its proper divisors (20773712928).

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

12273919872 is a wasteful number, since it uses less digits than its factorization.

12273919872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1624 (or 1612 counting only the distinct ones).

The product of its digits is 762048, while the sum is 51.

The spelling of 12273919872 in words is "twelve billion, two hundred seventy-three million, nine hundred nineteen thousand, eight hundred seventy-two".