664581416334 has 32 divisors (see below), whose sum is σ = 1455386175360. Its totient is φ = 200639647200.

The previous prime is 664581416333. The next prime is 664581416351. The reversal of 664581416334 is 433614185466.

664581416334 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664581416333) 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, 18698632 + ... + 18734139.

It is an arithmetic number, because the mean of its divisors is an integer number (45480817980).

Almost surely, 2^664581416334 is an apocalyptic number.

664581416334 is an abundant number, since it is smaller than the sum of its proper divisors (790804759026).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

664581416334 is a wasteful number, since it uses less digits than its factorization.

664581416334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37433056.

The product of its digits is 4976640, while the sum is 51.

The spelling of 664581416334 in words is "six hundred sixty-four billion, five hundred eighty-one million, four hundred sixteen thousand, three hundred thirty-four".