1720834052797 has 2 divisors, whose sum is σ = 1720834052798. Its totient is φ = 1720834052796.

The previous prime is 1720834052779. The next prime is 1720834052809. The reversal of 1720834052797 is 7972504380271.

Together with previous prime (1720834052779) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1697441573881 + 23392478916 = 1302859^2 + 152946^2 .

It is a cyclic number.

It is not a de Polignac number, because 1720834052797 - 2¹⁵ = 1720834020029 is a prime.

It is a super-2 number, since 2×1720834052797² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1720831052797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 860417026398 + 860417026399.

It is an arithmetic number, because the mean of its divisors is an integer number (860417026399).

Almost surely, 2^{1720834052797} is an apocalyptic number.

It is an amenable number.

1720834052797 is a deficient number, since it is larger than the sum of its proper divisors (1).

1720834052797 is an equidigital number, since it uses as much as digits as its factorization.

1720834052797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5927040, while the sum is 55.

The spelling of 1720834052797 in words is "one trillion, seven hundred twenty billion, eight hundred thirty-four million, fifty-two thousand, seven hundred ninety-seven".