6644628264466 has 8 divisors (see below), whose sum is σ = 10003994227980. Its totient is φ = 3309963521808.

The previous prime is 6644628264457. The next prime is 6644628264467.

6644628264466 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 4622160306241 + 2022467958225 = 2149921^2 + 1422135^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 6644628264398 and 6644628264407.

It is not an unprimeable number, because it can be changed into a prime (6644628264467) 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 3 ways as a sum of consecutive naturals, for example, 6175304541 + ... + 6175305616.

Almost surely, 2^{6644628264466} is an apocalyptic number.

6644628264466 is a deficient number, since it is larger than the sum of its proper divisors (3359365963514).

6644628264466 is a wasteful number, since it uses less digits than its factorization.

6644628264466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12350610428.

The product of its digits is 382205952, while the sum is 64.

The spelling of 6644628264466 in words is "six trillion, six hundred forty-four billion, six hundred twenty-eight million, two hundred sixty-four thousand, four hundred sixty-six".