6643040403466 has 8 divisors (see below), whose sum is σ = 9968065559424. Its totient is φ = 3320351883660.

The previous prime is 6643040403457. The next prime is 6643040403497.

It is a happy number.

6643040403466 is nontrivially palindromic in base 10.

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

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, 584151930 + ... + 584163301.

It is an arithmetic number, because the mean of its divisors is an integer number (1246008194928).

Almost surely, 2^{6643040403466} is an apocalyptic number.

6643040403466 is a deficient number, since it is larger than the sum of its proper divisors (3325025155958).

6643040403466 is a wasteful number, since it uses less digits than its factorization.

6643040403466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1168318076.

The product of its (nonzero) digits is 2985984, while the sum is 46.

The spelling of 6643040403466 in words is "six trillion, six hundred forty-three billion, forty million, four hundred three thousand, four hundred sixty-six".