1720834056493 has 2 divisors, whose sum is σ = 1720834056494. Its totient is φ = 1720834056492.

The previous prime is 1720834056463. The next prime is 1720834056523. The reversal of 1720834056493 is 3946504380271.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (1720834056463) and next prime (1720834056523).

It can be written as a sum of positive squares in only one way, i.e., 1719449993284 + 1384063209 = 1311278^2 + 37203^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1720834056493 is a prime.

It is a super-2 number, since 2×1720834056493² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1720834056493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1720834056433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 860417028246 + 860417028247.

It is an arithmetic number, because the mean of its divisors is an integer number (860417028247).

It is a 1-persistent number, because it is pandigital, but 2⋅1720834056493 = 3441668112986 is not.

Almost surely, 2^{1720834056493} is an apocalyptic number.

It is an amenable number.

1720834056493 is a deficient number, since it is larger than the sum of its proper divisors (1).

1720834056493 is an equidigital number, since it uses as much as digits as its factorization.

1720834056493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4354560, while the sum is 52.

The spelling of 1720834056493 in words is "one trillion, seven hundred twenty billion, eight hundred thirty-four million, fifty-six thousand, four hundred ninety-three".