2644066315168 has 24 divisors (see below), whose sum is σ = 5213626511940. Its totient is φ = 1319970693120.

The previous prime is 2644066315103. The next prime is 2644066315193. The reversal of 2644066315168 is 8615136604462.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2536463946384 + 107602368784 = 1592628^2 + 328028^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64431183 + ... + 64472206.

Almost surely, 2^{2644066315168} is an apocalyptic number.

It is an amenable number.

2644066315168 is a deficient number, since it is larger than the sum of its proper divisors (2569560196772).

2644066315168 is a wasteful number, since it uses less digits than its factorization.

2644066315168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128904040 (or 128904032 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 52.

The spelling of 2644066315168 in words is "two trillion, six hundred forty-four billion, sixty-six million, three hundred fifteen thousand, one hundred sixty-eight".