6644846052 has 36 divisors (see below), whose sum is σ = 18088748860. Its totient is φ = 2044567872.

The previous prime is 6644846023. The next prime is 6644846057. The reversal of 6644846052 is 2506484466.

6644846052 is a `hidden beast` number, since 6 + 64 + 484 + 60 + 52 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4452359076 + 2192486976 = 66726^2 + 46824^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 6644845989 and 6644846007.

It is not an unprimeable number, because it can be changed into a prime (6644846057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7098727 + ... + 7099662.

Almost surely, 2^6644846052 is an apocalyptic number.

It is an amenable number.

6644846052 is an abundant number, since it is smaller than the sum of its proper divisors (11443902808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6644846052 is a wasteful number, since it uses less digits than its factorization.

6644846052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14198412 (or 14198407 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 45.

The square root of 6644846052 is about 81515.9251434957. The cubic root of 6644846052 is about 1880.0164149012.

The spelling of 6644846052 in words is "six billion, six hundred forty-four million, eight hundred forty-six thousand, fifty-two".