1720834056889 has 8 divisors (see below), whose sum is σ = 1731935444288. Its totient is φ = 1709734450320.

The previous prime is 1720834056749. The next prime is 1720834056901. The reversal of 1720834056889 is 9886504380271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1720834056889 - 2¹³ = 1720834048697 is a prime.

It is a super-2 number, since 2×1720834056889² (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 (1720834056089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1521574 + ... + 2399344.

It is an arithmetic number, because the mean of its divisors is an integer number (216491930536).

It is a 1-persistent number, because it is pandigital, but 2⋅1720834056889 = 3441668113778 is not.

Almost surely, 2^{1720834056889} is an apocalyptic number.

It is an amenable number.

1720834056889 is a deficient number, since it is larger than the sum of its proper divisors (11101387399).

1720834056889 is a wasteful number, since it uses less digits than its factorization.

1720834056889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 890415.

The product of its (nonzero) digits is 23224320, while the sum is 61.

The spelling of 1720834056889 in words is "one trillion, seven hundred twenty billion, eight hundred thirty-four million, fifty-six thousand, eight hundred eighty-nine".