1720045600000 has 432 divisors, whose sum is σ = 5281996680576. Its totient is φ = 544343040000.

The previous prime is 1720045599977. The next prime is 1720045600037. The reversal of 1720045600000 is 65400271.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 72788187 + ... + 72811813.

It is an arithmetic number, because the mean of its divisors is an integer number (12226844168).

Almost surely, 2^{1720045600000} is an apocalyptic number.

1720045600000 is a gapful number since it is divisible by the number (10) 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 1720045600000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2640998340288).

1720045600000 is an abundant number, since it is smaller than the sum of its proper divisors (3561951080576).

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

1720045600000 is an frugal number, since it uses more digits than its factorization.

1720045600000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23688 (or 23654 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The spelling of 1720045600000 in words is "one trillion, seven hundred twenty billion, forty-five million, six hundred thousand".