12797830440 has 128 divisors (see below), whose sum is σ = 44035660800. Its totient is φ = 3302657280.

The previous prime is 12797830403. The next prime is 12797830459. The reversal of 12797830440 is 4403879721.

12797830440 is a `hidden beast` number, since 1 + 279 + 78 + 304 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 157647 + ... + 224606.

It is an arithmetic number, because the mean of its divisors is an integer number (344028600).

Almost surely, 2^12797830440 is an apocalyptic number.

12797830440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12797830440 is an abundant number, since it is smaller than the sum of its proper divisors (31237830360).

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

12797830440 is a wasteful number, since it uses less digits than its factorization.

12797830440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382304 (or 382294 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The spelling of 12797830440 in words is "twelve billion, seven hundred ninety-seven million, eight hundred thirty thousand, four hundred forty".