1720834056432 has 120 divisors (see below), whose sum is σ = 4958453419920. Its totient is φ = 556779740160.

The previous prime is 1720834056419. The next prime is 1720834056433. The reversal of 1720834056432 is 2346504380271.

1720834056432 is a `hidden beast` number, since 1 + 7 + 2 + 0 + 83 + 4 + 0 + 564 + 3 + 2 = 666.

It is a super-2 number, since 2×1720834056432² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1720834056433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 423319 + ... + 1902857.

It is an arithmetic number, because the mean of its divisors is an integer number (41320445166).

Almost surely, 2^{1720834056432} is an apocalyptic number.

1720834056432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1720834056432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2479226709960).

1720834056432 is an abundant number, since it is smaller than the sum of its proper divisors (3237619363488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1720834056432 is a wasteful number, since it uses less digits than its factorization.

1720834056432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1479791 (or 1479782 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 45.

The spelling of 1720834056432 in words is "one trillion, seven hundred twenty billion, eight hundred thirty-four million, fifty-six thousand, four hundred thirty-two".