717117161121 has 24 divisors (see below), whose sum is σ = 1043590359240. Its totient is φ = 474500422656.

The previous prime is 717117161053. The next prime is 717117161149. The reversal of 717117161121 is 121161711717.

717117161121 is a `hidden beast` number, since 7 + 1 + 7 + 1 + 17 + 1 + 611 + 21 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 300364283025 + 416752878096 = 548055^2 + 645564^2 .

It is not a de Polignac number, because 717117161121 - 2⁷ = 717117160993 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (717117161221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6963421 + ... + 7065653.

It is an arithmetic number, because the mean of its divisors is an integer number (43482931635).

Almost surely, 2^717117161121 is an apocalyptic number.

It is an amenable number.

717117161121 is a deficient number, since it is larger than the sum of its proper divisors (326473198119).

717117161121 is a wasteful number, since it uses less digits than its factorization.

717117161121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108065 (or 108062 counting only the distinct ones).

The product of its digits is 4116, while the sum is 36.

Adding to 717117161121 its reverse (121161711717), we get a palindrome (838278872838).

The spelling of 717117161121 in words is "seven hundred seventeen billion, one hundred seventeen million, one hundred sixty-one thousand, one hundred twenty-one".