6426664642246 has 8 divisors (see below), whose sum is σ = 9640085612040. Its totient is φ = 3213302771568.

The previous prime is 6426664642187. The next prime is 6426664642247. The reversal of 6426664642246 is 6422464666246.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6426664642247) 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, 14501911 + ... + 14938498.

It is an arithmetic number, because the mean of its divisors is an integer number (1205010701505).

Almost surely, 2^{6426664642246} is an apocalyptic number.

6426664642246 is a deficient number, since it is larger than the sum of its proper divisors (3213420969794).

6426664642246 is a wasteful number, since it uses less digits than its factorization.

6426664642246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29549558.

The product of its digits is 95551488, while the sum is 58.

The spelling of 6426664642246 in words is "six trillion, four hundred twenty-six billion, six hundred sixty-four million, six hundred forty-two thousand, two hundred forty-six".