65717553017 has 4 divisors (see below), whose sum is σ = 65724555876. Its totient is φ = 65710550160.

The previous prime is 65717553007. The next prime is 65717553061. The reversal of 65717553017 is 71035571756.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25491634921 + 40225918096 = 159661^2 + 200564^2 .

It is a cyclic number.

It is not a de Polignac number, because 65717553017 - 2¹² = 65717548921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65717553007) 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 3 ways as a sum of consecutive naturals, for example, 3487334 + ... + 3506127.

It is an arithmetic number, because the mean of its divisors is an integer number (16431138969).

Almost surely, 2^65717553017 is an apocalyptic number.

It is an amenable number.

65717553017 is a deficient number, since it is larger than the sum of its proper divisors (7002859).

65717553017 is an equidigital number, since it uses as much as digits as its factorization.

65717553017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7002858.

The product of its (nonzero) digits is 771750, while the sum is 47.

The spelling of 65717553017 in words is "sixty-five billion, seven hundred seventeen million, five hundred fifty-three thousand, seventeen".