12403333280 has 384 divisors, whose sum is σ = 35444376576. Its totient is φ = 4055040000.

The previous prime is 12403333253. The next prime is 12403333289. The reversal of 12403333280 is 8233330421.

It is not an unprimeable number, because it can be changed into a prime (12403333289) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 82141205 + ... + 82141355.

It is an arithmetic number, because the mean of its divisors is an integer number (92303064).

Almost surely, 2^12403333280 is an apocalyptic number.

12403333280 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 12403333280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17722188288).

12403333280 is an abundant number, since it is smaller than the sum of its proper divisors (23041043296).

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

12403333280 is a wasteful number, since it uses less digits than its factorization.

12403333280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320 (or 312 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

The spelling of 12403333280 in words is "twelve billion, four hundred three million, three hundred thirty-three thousand, two hundred eighty".