664416317402606 has 16 divisors (see below), whose sum is σ = 1025263368119760. Its totient is φ = 322691740228800.

The previous prime is 664416317402561. The next prime is 664416317402609. The reversal of 664416317402606 is 606204713614466.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664416317402609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7469671736 + ... + 7469760683.

It is an arithmetic number, because the mean of its divisors is an integer number (64078960507485).

Almost surely, 2^{664416317402606} is an apocalyptic number.

664416317402606 is a deficient number, since it is larger than the sum of its proper divisors (360847050717154).

664416317402606 is a wasteful number, since it uses less digits than its factorization.

664416317402606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14939433059.

The product of its (nonzero) digits is 20901888, while the sum is 56.

The spelling of 664416317402606 in words is "six hundred sixty-four trillion, four hundred sixteen billion, three hundred seventeen million, four hundred two thousand, six hundred six".