664463621640134 has 8 divisors (see below), whose sum is σ = 1031064240476160. Its totient is φ = 320775541481416.

The previous prime is 664463621640127. The next prime is 664463621640173. The reversal of 664463621640134 is 431046126364466.

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

It is a self number, because there is not a number n which added to its sum of digits gives 664463621640134.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5728134669254 + ... + 5728134669369.

It is an arithmetic number, because the mean of its divisors is an integer number (128883030059520).

Almost surely, 2^{664463621640134} is an apocalyptic number.

664463621640134 is a deficient number, since it is larger than the sum of its proper divisors (366600618836026).

664463621640134 is a wasteful number, since it uses less digits than its factorization.

664463621640134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11456269338654.

The product of its (nonzero) digits is 35831808, while the sum is 56.

The spelling of 664463621640134 in words is "six hundred sixty-four trillion, four hundred sixty-three billion, six hundred twenty-one million, six hundred forty thousand, one hundred thirty-four".