6643464643466 has 8 divisors (see below), whose sum is σ = 11388796531680. Its totient is φ = 2847199132908.

The previous prime is 6643464643457. The next prime is 6643464643477.

6643464643466 is nontrivially palindromic in base 10.

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 = 6643464643399 and 6643464643408.

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, 237266594396 + ... + 237266594423.

It is an arithmetic number, because the mean of its divisors is an integer number (1423599566460).

Almost surely, 2^{6643464643466} is an apocalyptic number.

6643464643466 is a deficient number, since it is larger than the sum of its proper divisors (4745331888214).

6643464643466 is a wasteful number, since it uses less digits than its factorization.

6643464643466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474533188828.

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

The spelling of 6643464643466 in words is "six trillion, six hundred forty-three billion, four hundred sixty-four million, six hundred forty-three thousand, four hundred sixty-six".