2001043720297 has 2 divisors, whose sum is σ = 2001043720298. Its totient is φ = 2001043720296.

The previous prime is 2001043720243. The next prime is 2001043720327. The reversal of 2001043720297 is 7920273401002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1005736202496 + 995307517801 = 1002864^2 + 997651^2 .

It is a cyclic number.

It is not a de Polignac number, because 2001043720297 - 2¹¹ = 2001043718249 is a prime.

It is not a weakly prime, because it can be changed into another prime (2001043720997) 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 as a sum of consecutive naturals, namely, 1000521860148 + 1000521860149.

It is an arithmetic number, because the mean of its divisors is an integer number (1000521860149).

Almost surely, 2^{2001043720297} is an apocalyptic number.

It is an amenable number.

2001043720297 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001043720297 is an equidigital number, since it uses as much as digits as its factorization.

2001043720297 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 37.

The spelling of 2001043720297 in words is "two trillion, one billion, forty-three million, seven hundred twenty thousand, two hundred ninety-seven".