2644660418402 has 16 divisors (see below), whose sum is σ = 4201902889272. Its totient is φ = 1244083895040.

The previous prime is 2644660418371. The next prime is 2644660418417. The reversal of 2644660418402 is 2048140664462.

2644660418402 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 2299411337161 + 345249081241 = 1516381^2 + 587579^2 .

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, 14350349 + ... + 14533472.

Almost surely, 2^{2644660418402} is an apocalyptic number.

2644660418402 is a deficient number, since it is larger than the sum of its proper divisors (1557242470870).

2644660418402 is a wasteful number, since it uses less digits than its factorization.

2644660418402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28886533.

The product of its (nonzero) digits is 1769472, while the sum is 47.

The spelling of 2644660418402 in words is "two trillion, six hundred forty-four billion, six hundred sixty million, four hundred eighteen thousand, four hundred two".