12402899344 has 80 divisors (see below), whose sum is σ = 27797417280. Its totient is φ = 5301780480.

The previous prime is 12402899309. The next prime is 12402899441. The reversal of 12402899344 is 44399820421.

It is a junction number, because it is equal to n+sod(n) for n = 12402899294 and 12402899303.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 444592 + ... + 471664.

It is an arithmetic number, because the mean of its divisors is an integer number (347467716).

Almost surely, 2^12402899344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12402899344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13898708640).

12402899344 is an abundant number, since it is smaller than the sum of its proper divisors (15394517936).

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

12402899344 is a wasteful number, since it uses less digits than its factorization.

12402899344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27248 (or 27242 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 46.

The spelling of 12402899344 in words is "twelve billion, four hundred two million, eight hundred ninety-nine thousand, three hundred forty-four".