1720063464673 has 4 divisors (see below), whose sum is σ = 1722581859888. Its totient is φ = 1717545069460.

The previous prime is 1720063464653. The next prime is 1720063464677. The reversal of 1720063464673 is 3764643600271.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1720063464673 - 2⁵ = 1720063464641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1720063464677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1259196583 + ... + 1259197948.

It is an arithmetic number, because the mean of its divisors is an integer number (430645464972).

Almost surely, 2^{1720063464673} is an apocalyptic number.

It is an amenable number.

1720063464673 is a deficient number, since it is larger than the sum of its proper divisors (2518395215).

1720063464673 is an equidigital number, since it uses as much as digits as its factorization.

1720063464673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2518395214.

The product of its (nonzero) digits is 3048192, while the sum is 49.

The spelling of 1720063464673 in words is "one trillion, seven hundred twenty billion, sixty-three million, four hundred sixty-four thousand, six hundred seventy-three".