664575324543 has 64 divisors (see below), whose sum is σ = 1074720245760. Its totient is φ = 403419139200.

The previous prime is 664575324541. The next prime is 664575324629. The reversal of 664575324543 is 345423575466.

664575324543 is a `hidden beast` number, since 6 + 6 + 4 + 5 + 75 + 3 + 24 + 543 = 666.

It is not a de Polignac number, because 664575324543 - 2¹ = 664575324541 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 664575324543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664575324541) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19239658 + ... + 19274168.

It is an arithmetic number, because the mean of its divisors is an integer number (16792503840).

Almost surely, 2^664575324543 is an apocalyptic number.

664575324543 is a deficient number, since it is larger than the sum of its proper divisors (410144921217).

664575324543 is a wasteful number, since it uses less digits than its factorization.

664575324543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35277 (or 35271 counting only the distinct ones).

The product of its digits is 36288000, while the sum is 54.

The spelling of 664575324543 in words is "six hundred sixty-four billion, five hundred seventy-five million, three hundred twenty-four thousand, five hundred forty-three".