12279003840 has 336 divisors, whose sum is σ = 46109656320. Its totient is φ = 3101690880.

The previous prime is 12279003829. The next prime is 12279003871. The reversal of 12279003840 is 4830097221.

12279003840 is a `hidden beast` number, since 1 + 2 + 279 + 0 + 0 + 384 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 12279003795 and 12279003804.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1473285 + ... + 1481595.

It is an arithmetic number, because the mean of its divisors is an integer number (137231120).

Almost surely, 2^12279003840 is an apocalyptic number.

12279003840 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 12279003840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23054828160).

12279003840 is an abundant number, since it is smaller than the sum of its proper divisors (33830652480).

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

12279003840 is an equidigital number, since it uses as much as digits as its factorization.

12279003840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8362 (or 8340 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The spelling of 12279003840 in words is "twelve billion, two hundred seventy-nine million, three thousand, eight hundred forty".