1720214067744 has 144 divisors (see below), whose sum is σ = 4997759981760. Its totient is φ = 561104755200.

The previous prime is 1720214067713. The next prime is 1720214067763. The reversal of 1720214067744 is 4477604120271.

1720214067744 is a `hidden beast` number, since 172 + 0 + 2 + 1 + 406 + 7 + 74 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a self number, because there is not a number n which added to its sum of digits gives 1720214067744.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2618502 + ... + 3208890.

It is an arithmetic number, because the mean of its divisors is an integer number (34706666540).

Almost surely, 2^{1720214067744} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1720214067744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2498879990880).

1720214067744 is an abundant number, since it is smaller than the sum of its proper divisors (3277545914016).

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

1720214067744 is a wasteful number, since it uses less digits than its factorization.

1720214067744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590623 (or 590612 counting only the distinct ones).

The product of its (nonzero) digits is 526848, while the sum is 45.

The spelling of 1720214067744 in words is "one trillion, seven hundred twenty billion, two hundred fourteen million, sixty-seven thousand, seven hundred forty-four".