717983380853 has 2 divisors, whose sum is σ = 717983380854. Its totient is φ = 717983380852.

The previous prime is 717983380847. The next prime is 717983380897. The reversal of 717983380853 is 358083389717.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 551860294129 + 166123086724 = 742873^2 + 407582^2 .

It is a cyclic number.

It is not a de Polignac number, because 717983380853 - 2¹⁸ = 717983118709 is a prime.

It is a super-3 number, since 3×717983380853³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (717983383853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 358991690426 + 358991690427.

It is an arithmetic number, because the mean of its divisors is an integer number (358991690427).

Almost surely, 2^717983380853 is an apocalyptic number.

It is an amenable number.

717983380853 is a deficient number, since it is larger than the sum of its proper divisors (1).

717983380853 is an equidigital number, since it uses as much as digits as its factorization.

717983380853 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30481920, while the sum is 62.

The spelling of 717983380853 in words is "seven hundred seventeen billion, nine hundred eighty-three million, three hundred eighty thousand, eight hundred fifty-three".