6402206664444 has 12 divisors (see below), whose sum is σ = 14938482217064. Its totient is φ = 2134068888144.

The previous prime is 6402206664433. The next prime is 6402206664467. The reversal of 6402206664444 is 4444666022046.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 6402206664393 and 6402206664402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266758611007 + ... + 266758611030.

Almost surely, 2^{6402206664444} is an apocalyptic number.

It is an amenable number.

6402206664444 is an abundant number, since it is smaller than the sum of its proper divisors (8536275552620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6402206664444 is a wasteful number, since it uses less digits than its factorization.

6402206664444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533517222044 (or 533517222042 counting only the distinct ones).

The product of its (nonzero) digits is 5308416, while the sum is 48.

The spelling of 6402206664444 in words is "six trillion, four hundred two billion, two hundred six million, six hundred sixty-four thousand, four hundred forty-four".