13078772146 has 36 divisors (see below), whose sum is σ = 22845029886. Its totient is φ = 5592058560.

The previous prime is 13078772123. The next prime is 13078772159. The reversal of 13078772146 is 64127787031.

13078772146 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 9616744225 + 3462027921 = 98065^2 + 58839^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13078772096 and 13078772105.

It is a congruent number.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 7334371 + ... + 7336153.

Almost surely, 2^13078772146 is an apocalyptic number.

13078772146 is a deficient number, since it is larger than the sum of its proper divisors (9766257740).

13078772146 is an equidigital number, since it uses as much as digits as its factorization.

13078772146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3607 (or 1813 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 46.

The spelling of 13078772146 in words is "thirteen billion, seventy-eight million, seven hundred seventy-two thousand, one hundred forty-six".