1720073730473 has 8 divisors (see below), whose sum is σ = 1970176723200. Its totient is φ = 1471065281280.

The previous prime is 1720073730457. The next prime is 1720073730491. The reversal of 1720073730473 is 3740373700271.

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

It is not a de Polignac number, because 1720073730473 - 2⁴ = 1720073730457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1720073730673) 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 7 ways as a sum of consecutive naturals, for example, 273632513 + ... + 273638798.

It is an arithmetic number, because the mean of its divisors is an integer number (246272090400).

Almost surely, 2^{1720073730473} is an apocalyptic number.

It is an amenable number.

1720073730473 is a deficient number, since it is larger than the sum of its proper divisors (250102992727).

1720073730473 is an equidigital number, since it uses as much as digits as its factorization.

1720073730473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547271767.

The product of its (nonzero) digits is 518616, while the sum is 44.

The spelling of 1720073730473 in words is "one trillion, seven hundred twenty billion, seventy-three million, seven hundred thirty thousand, four hundred seventy-three".