664456440054535 has 8 divisors (see below), whose sum is σ = 797348119078656. Its totient is φ = 531564891368160.

The previous prime is 664456440054521. The next prime is 664456440054581. The reversal of 664456440054535 is 535450044654466.

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

It is not a de Polignac number, because 664456440054535 - 2³⁵ = 664422080316167 is a prime.

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 20994136 + ... + 42067405.

It is an arithmetic number, because the mean of its divisors is an integer number (99668514884832).

Almost surely, 2^{664456440054535} is an apocalyptic number.

664456440054535 is a deficient number, since it is larger than the sum of its proper divisors (132891679024121).

664456440054535 is a wasteful number, since it uses less digits than its factorization.

664456440054535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65168873.

The product of its (nonzero) digits is 414720000, while the sum is 61.

The spelling of 664456440054535 in words is "six hundred sixty-four trillion, four hundred fifty-six billion, four hundred forty million, fifty-four thousand, five hundred thirty-five".