13051478642 has 16 divisors (see below), whose sum is σ = 20485702872. Its totient is φ = 6229566720.

The previous prime is 13051478641. The next prime is 13051478647. The reversal of 13051478642 is 24687415031.

13051478642 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 4 ways, for example, as 13025885161 + 25593481 = 114131^2 + 5059^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13051478642.

It is not an unprimeable number, because it can be changed into a prime (13051478641) 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, 1659959 + ... + 1667802.

Almost surely, 2^13051478642 is an apocalyptic number.

13051478642 is a deficient number, since it is larger than the sum of its proper divisors (7434224230).

13051478642 is a wasteful number, since it uses less digits than its factorization.

13051478642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3327853.

The product of its (nonzero) digits is 161280, while the sum is 41.

The spelling of 13051478642 in words is "thirteen billion, fifty-one million, four hundred seventy-eight thousand, six hundred forty-two".