664581416337 has 32 divisors (see below), whose sum is σ = 1027751660160. Its totient is φ = 424012916160.

The previous prime is 664581416333. The next prime is 664581416351. The reversal of 664581416337 is 733614185466.

664581416337 is a `hidden beast` number, since 66 + 458 + 1 + 41 + 63 + 37 = 666.

It is not a de Polignac number, because 664581416337 - 2² = 664581416333 is a prime.

It is not an unprimeable number, because it can be changed into a prime (664581416333) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 5391903 + ... + 5513780.

It is an arithmetic number, because the mean of its divisors is an integer number (32117239380).

Almost surely, 2^664581416337 is an apocalyptic number.

It is an amenable number.

664581416337 is a deficient number, since it is larger than the sum of its proper divisors (363170243823).

664581416337 is a wasteful number, since it uses less digits than its factorization.

664581416337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10905790 (or 10905784 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 54.

The spelling of 664581416337 in words is "six hundred sixty-four billion, five hundred eighty-one million, four hundred sixteen thousand, three hundred thirty-seven".