20003421751297 has 2 divisors, whose sum is σ = 20003421751298. Its totient is φ = 20003421751296.

The previous prime is 20003421751289. The next prime is 20003421751321. The reversal of 20003421751297 is 79215712430002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10741357314801 + 9262064436496 = 3277401^2 + 3043364^2 .

It is a cyclic number.

It is not a de Polignac number, because 20003421751297 - 2³ = 20003421751289 is a prime.

It is not a weakly prime, because it can be changed into another prime (20003421751207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001710875648 + 10001710875649.

It is an arithmetic number, because the mean of its divisors is an integer number (10001710875649).

Almost surely, 2^{20003421751297} is an apocalyptic number.

It is an amenable number.

20003421751297 is a deficient number, since it is larger than the sum of its proper divisors (1).

20003421751297 is an equidigital number, since it uses as much as digits as its factorization.

20003421751297 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 211680, while the sum is 43.

The spelling of 20003421751297 in words is "twenty trillion, three billion, four hundred twenty-one million, seven hundred fifty-one thousand, two hundred ninety-seven".