664412421164017 has 16 divisors (see below), whose sum is σ = 677522102400000. Its totient is φ = 651324122423104.

The previous prime is 664412421163961. The next prime is 664412421164029. The reversal of 664412421164017 is 710461124214466.

It is a cyclic number.

It is not a de Polignac number, because 664412421164017 - 2¹⁹ = 664412420639729 is a prime.

It is a super-2 number, since 2×664412421164017² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (664412421164117) 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, 502625859 + ... + 503946007.

It is an arithmetic number, because the mean of its divisors is an integer number (42345131400000).

Almost surely, 2^{664412421164017} is an apocalyptic number.

It is an amenable number.

664412421164017 is a deficient number, since it is larger than the sum of its proper divisors (13109681235983).

664412421164017 is a wasteful number, since it uses less digits than its factorization.

664412421164017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328240.

The product of its (nonzero) digits is 1548288, while the sum is 49.

The spelling of 664412421164017 in words is "six hundred sixty-four trillion, four hundred twelve billion, four hundred twenty-one million, one hundred sixty-four thousand, seventeen".