1720447352123 has 8 divisors (see below), whose sum is σ = 1822803839280. Its totient is φ = 1618219054080.

The previous prime is 1720447352083. The next prime is 1720447352213. The reversal of 1720447352123 is 3212537440271.

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 1720447352123 - 2⁸ = 1720447351867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1720447352623) 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, 32019638 + ... + 32073323.

It is an arithmetic number, because the mean of its divisors is an integer number (227850479910).

Almost surely, 2^{1720447352123} is an apocalyptic number.

1720447352123 is a deficient number, since it is larger than the sum of its proper divisors (102356487157).

1720447352123 is a wasteful number, since it uses less digits than its factorization.

1720447352123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64094557.

The product of its (nonzero) digits is 282240, while the sum is 41.

The spelling of 1720447352123 in words is "one trillion, seven hundred twenty billion, four hundred forty-seven million, three hundred fifty-two thousand, one hundred twenty-three".