1712171650513 has 4 divisors (see below), whose sum is σ = 1729822904740. Its totient is φ = 1694520396288.

The previous prime is 1712171650421. The next prime is 1712171650537. The reversal of 1712171650513 is 3150561712171.

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 1417547409664 + 294624240849 = 1190608^2 + 542793^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1712171650513 is a prime.

It is a super-2 number, since 2×1712171650513² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1712171650573) 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, 8825626968 + ... + 8825627161.

It is an arithmetic number, because the mean of its divisors is an integer number (432455726185).

Almost surely, 2^{1712171650513} is an apocalyptic number.

It is an amenable number.

1712171650513 is a deficient number, since it is larger than the sum of its proper divisors (17651254227).

1712171650513 is an equidigital number, since it uses as much as digits as its factorization.

1712171650513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17651254226.

The product of its (nonzero) digits is 44100, while the sum is 40.

The spelling of 1712171650513 in words is "one trillion, seven hundred twelve billion, one hundred seventy-one million, six hundred fifty thousand, five hundred thirteen".