13126784378 has 16 divisors (see below), whose sum is σ = 19910790144. Its totient is φ = 6489974400.

The previous prime is 13126784357. The next prime is 13126784423. The reversal of 13126784378 is 87348762131.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 193901 + ... + 252687.

It is an arithmetic number, because the mean of its divisors is an integer number (1244424384).

Almost surely, 2^13126784378 is an apocalyptic number.

13126784378 is a deficient number, since it is larger than the sum of its proper divisors (6784005766).

13126784378 is a wasteful number, since it uses less digits than its factorization.

13126784378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60037.

The product of its digits is 1354752, while the sum is 50.

The spelling of 13126784378 in words is "thirteen billion, one hundred twenty-six million, seven hundred eighty-four thousand, three hundred seventy-eight".