717414172721 has 16 divisors (see below), whose sum is σ = 750179869200. Its totient is φ = 685196064000.

The previous prime is 717414172687. The next prime is 717414172723. The reversal of 717414172721 is 127271414717.

It can be written as a sum of positive squares in 8 ways, for example, as 64729536400 + 652684636321 = 254420^2 + 807889^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-717414172721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (717414172723) 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 15 ways as a sum of consecutive naturals, for example, 3137831 + ... + 3358691.

It is an arithmetic number, because the mean of its divisors is an integer number (46886241825).

Almost surely, 2^717414172721 is an apocalyptic number.

It is an amenable number.

717414172721 is a deficient number, since it is larger than the sum of its proper divisors (32765696479).

717414172721 is a wasteful number, since it uses less digits than its factorization.

717414172721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222100.

The product of its digits is 153664, while the sum is 44.

The spelling of 717414172721 in words is "seven hundred seventeen billion, four hundred fourteen million, one hundred seventy-two thousand, seven hundred twenty-one".