13013047778 has 16 divisors (see below), whose sum is σ = 20918744640. Its totient is φ = 6055424496.

The previous prime is 13013047771. The next prime is 13013047781. The reversal of 13013047778 is 87774031031.

13013047778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (13013047771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3821168 + ... + 3824571.

It is an arithmetic number, because the mean of its divisors is an integer number (1307421540).

Almost surely, 2^13013047778 is an apocalyptic number.

13013047778 is a deficient number, since it is larger than the sum of its proper divisors (7905696862).

13013047778 is a wasteful number, since it uses less digits than its factorization.

13013047778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7645801.

The product of its (nonzero) digits is 98784, while the sum is 41.

The spelling of 13013047778 in words is "thirteen billion, thirteen million, forty-seven thousand, seven hundred seventy-eight".