12820042378 has 16 divisors (see below), whose sum is σ = 22591963296. Its totient is φ = 5379038640.

The previous prime is 12820042357. The next prime is 12820042409. The reversal of 12820042378 is 87324002821.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22412376 + ... + 22412947.

It is an arithmetic number, because the mean of its divisors is an integer number (1411997706).

Almost surely, 2^12820042378 is an apocalyptic number.

12820042378 is a deficient number, since it is larger than the sum of its proper divisors (9771920918).

12820042378 is a wasteful number, since it uses less digits than its factorization.

12820042378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44825349.

The product of its (nonzero) digits is 43008, while the sum is 37.

The spelling of 12820042378 in words is "twelve billion, eight hundred twenty million, forty-two thousand, three hundred seventy-eight".