6644364634466 has 64 divisors (see below), whose sum is σ = 11972800667520. Its totient is φ = 2732024816640.

The previous prime is 6644364634441. The next prime is 6644364634507.

6644364634466 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 6644364634399 and 6644364634408.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9635156 + ... + 10301696.

It is an arithmetic number, because the mean of its divisors is an integer number (187075010430).

Almost surely, 2^{6644364634466} is an apocalyptic number.

6644364634466 is a deficient number, since it is larger than the sum of its proper divisors (5328436033054).

6644364634466 is a wasteful number, since it uses less digits than its factorization.

6644364634466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667779.

The product of its digits is 429981696, while the sum is 62.

The spelling of 6644364634466 in words is "six trillion, six hundred forty-four billion, three hundred sixty-four million, six hundred thirty-four thousand, four hundred sixty-six".