12808321240 has 64 divisors (see below), whose sum is σ = 33856976160. Its totient is φ = 4299294720.

The previous prime is 12808321217. The next prime is 12808321241. The reversal of 12808321240 is 4212380821.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12808321241) 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, 1113889 + ... + 1125328.

Almost surely, 2^12808321240 is an apocalyptic number.

12808321240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12808321240 is an abundant number, since it is smaller than the sum of its proper divisors (21048654920).

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

12808321240 is a wasteful number, since it uses less digits than its factorization.

12808321240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2239252 (or 2239248 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The spelling of 12808321240 in words is "twelve billion, eight hundred eight million, three hundred twenty-one thousand, two hundred forty".