1720747057403 has 8 divisors (see below), whose sum is σ = 1878696148080. Its totient is φ = 1563050890080.

The previous prime is 1720747057357. The next prime is 1720747057411. The reversal of 1720747057403 is 3047507470271.

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 1720747057403 - 2⁸ = 1720747057147 is a prime.

It is a super-2 number, since 2×1720747057403² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1720747057453) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 63216608 + ... + 63243821.

It is an arithmetic number, because the mean of its divisors is an integer number (234837018510).

Almost surely, 2^{1720747057403} is an apocalyptic number.

1720747057403 is a deficient number, since it is larger than the sum of its proper divisors (157949090677).

1720747057403 is a wasteful number, since it uses less digits than its factorization.

1720747057403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126461677.

The product of its (nonzero) digits is 1152480, while the sum is 47.

The spelling of 1720747057403 in words is "one trillion, seven hundred twenty billion, seven hundred forty-seven million, fifty-seven thousand, four hundred three".