2020001708729 has 2 divisors, whose sum is σ = 2020001708730. Its totient is φ = 2020001708728.

The previous prime is 2020001708653. The next prime is 2020001708731. The reversal of 2020001708729 is 9278071000202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1457689193104 + 562312515625 = 1207348^2 + 749875^2 .

It is a cyclic number.

It is not a de Polignac number, because 2020001708729 - 2¹⁶ = 2020001643193 is a prime.

It is a super-3 number, since 3×2020001708729³ (a number of 38 digits) contains 333 as substring.

Together with 2020001708731, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2020001708692 and 2020001708701.

It is not a weakly prime, because it can be changed into another prime (2020801708729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010000854364 + 1010000854365.

It is an arithmetic number, because the mean of its divisors is an integer number (1010000854365).

Almost surely, 2^{2020001708729} is an apocalyptic number.

It is an amenable number.

2020001708729 is a deficient number, since it is larger than the sum of its proper divisors (1).

2020001708729 is an equidigital number, since it uses as much as digits as its factorization.

2020001708729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 38.

The spelling of 2020001708729 in words is "two trillion, twenty billion, one million, seven hundred eight thousand, seven hundred twenty-nine".