6644566053 has 8 divisors (see below), whose sum is σ = 9843801600. Its totient is φ = 4429710684.

The previous prime is 6644566007. The next prime is 6644566087. The reversal of 6644566053 is 3506654466.

It is not a de Polignac number, because 6644566053 - 2¹⁶ = 6644500517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6644566003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123047493 + ... + 123047546.

It is an arithmetic number, because the mean of its divisors is an integer number (1230475200).

Almost surely, 2^6644566053 is an apocalyptic number.

It is an amenable number.

6644566053 is a deficient number, since it is larger than the sum of its proper divisors (3199235547).

6644566053 is a wasteful number, since it uses less digits than its factorization.

6644566053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246095048 (or 246095042 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 45.

The square root of 6644566053 is about 81514.2076757175. The cubic root of 6644566053 is about 1879.9900079633.

The spelling of 6644566053 in words is "six billion, six hundred forty-four million, five hundred sixty-six thousand, fifty-three".