917013081664 has 21 divisors (see below), whose sum is σ = 1819713036081. Its totient is φ = 458502710400.

The previous prime is 917013081659. The next prime is 917013081667. The reversal of 917013081664 is 466180310719.

The square root of 917013081664 is 957608.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 896415091264 + 20597990400 = 946792^2 + 143520^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (917013081667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 7601014 + ... + 7720714.

Almost surely, 2^917013081664 is an apocalyptic number.

917013081664 is the 957608-th square number.

It is an amenable number.

917013081664 is a deficient number, since it is larger than the sum of its proper divisors (902699954417).

917013081664 is an frugal number, since it uses more digits than its factorization.

917013081664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239414 (or 119703 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 46.

The spelling of 917013081664 in words is "nine hundred seventeen billion, thirteen million, eighty-one thousand, six hundred sixty-four".