2323217752721 has 2 divisors, whose sum is σ = 2323217752722. Its totient is φ = 2323217752720.

The previous prime is 2323217752703. The next prime is 2323217752747. The reversal of 2323217752721 is 1272577123232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1241243320321 + 1081974432400 = 1114111^2 + 1040180^2 .

It is a cyclic number.

It is not a de Polignac number, because 2323217752721 - 2¹⁰ = 2323217751697 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2323217752771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1161608876360 + 1161608876361.

It is an arithmetic number, because the mean of its divisors is an integer number (1161608876361).

Almost surely, 2^{2323217752721} is an apocalyptic number.

It is an amenable number.

2323217752721 is a deficient number, since it is larger than the sum of its proper divisors (1).

2323217752721 is an equidigital number, since it uses as much as digits as its factorization.

2323217752721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 493920, while the sum is 44.

The spelling of 2323217752721 in words is "two trillion, three hundred twenty-three billion, two hundred seventeen million, seven hundred fifty-two thousand, seven hundred twenty-one".