6466640312006 has 8 divisors (see below), whose sum is σ = 11085669106320. Its totient is φ = 2771417276568.

The previous prime is 6466640311991. The next prime is 6466640312009. The reversal of 6466640312006 is 6002130466646.

It is a happy number.

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

It is a super-2 number, since 2×6466640312006² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6466640312009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 230951439701 + ... + 230951439728.

It is an arithmetic number, because the mean of its divisors is an integer number (1385708638290).

Almost surely, 2^{6466640312006} is an apocalyptic number.

6466640312006 is a deficient number, since it is larger than the sum of its proper divisors (4619028794314).

6466640312006 is a wasteful number, since it uses less digits than its factorization.

6466640312006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461902879438.

The product of its (nonzero) digits is 746496, while the sum is 44.

The spelling of 6466640312006 in words is "six trillion, four hundred sixty-six billion, six hundred forty million, three hundred twelve thousand, six".