664416244524613 has 16 divisors (see below), whose sum is σ = 770668082671104. Its totient is φ = 560998256361840.

The previous prime is 664416244524607. The next prime is 664416244524649. The reversal of 664416244524613 is 316425442614466.

It is a cyclic number.

It is not a de Polignac number, because 664416244524613 - 2⁹ = 664416244524101 is a prime.

It is a super-3 number, since 3×664416244524613³ (a number of 45 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664416244524713) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 217292298 + ... + 220328788.

It is an arithmetic number, because the mean of its divisors is an integer number (48166755166944).

Almost surely, 2^{664416244524613} is an apocalyptic number.

It is an amenable number.

664416244524613 is a deficient number, since it is larger than the sum of its proper divisors (106251838146491).

664416244524613 is a wasteful number, since it uses less digits than its factorization.

664416244524613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3503112.

The product of its digits is 79626240, while the sum is 58.

The spelling of 664416244524613 in words is "six hundred sixty-four trillion, four hundred sixteen billion, two hundred forty-four million, five hundred twenty-four thousand, six hundred thirteen".