1712721346513 has 4 divisors (see below), whose sum is σ = 1712789724580. Its totient is φ = 1712652968448.

The previous prime is 1712721346499. The next prime is 1712721346529. The reversal of 1712721346513 is 3156431272171.

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 857053795984 + 855667550529 = 925772^2 + 925023^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1712721346513 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1712721346513.

It is not an unprimeable number, because it can be changed into a prime (1712721346213) 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 3 ways as a sum of consecutive naturals, for example, 34151448 + ... + 34201561.

It is an arithmetic number, because the mean of its divisors is an integer number (428197431145).

Almost surely, 2^{1712721346513} is an apocalyptic number.

It is an amenable number.

1712721346513 is a deficient number, since it is larger than the sum of its proper divisors (68378067).

1712721346513 is an equidigital number, since it uses as much as digits as its factorization.

1712721346513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68378066.

The product of its digits is 211680, while the sum is 43.

The spelling of 1712721346513 in words is "one trillion, seven hundred twelve billion, seven hundred twenty-one million, three hundred forty-six thousand, five hundred thirteen".