1720834056433 has 2 divisors, whose sum is σ = 1720834056434. Its totient is φ = 1720834056432.

The previous prime is 1720834056419. The next prime is 1720834056439. The reversal of 1720834056433 is 3346504380271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1479697079184 + 241136977249 = 1216428^2 + 491057^2 .

It is a cyclic number.

It is not a de Polignac number, because 1720834056433 - 2²¹ = 1720831959281 is a prime.

It is a super-2 number, since 2×1720834056433² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1720834056439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 860417028216 + 860417028217.

It is an arithmetic number, because the mean of its divisors is an integer number (860417028217).

Almost surely, 2^{1720834056433} is an apocalyptic number.

It is an amenable number.

1720834056433 is a deficient number, since it is larger than the sum of its proper divisors (1).

1720834056433 is an equidigital number, since it uses as much as digits as its factorization.

1720834056433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1451520, while the sum is 46.

The spelling of 1720834056433 in words is "one trillion, seven hundred twenty billion, eight hundred thirty-four million, fifty-six thousand, four hundred thirty-three".