2321703752561 has 2 divisors, whose sum is σ = 2321703752562. Its totient is φ = 2321703752560.

The previous prime is 2321703752551. The next prime is 2321703752597. The reversal of 2321703752561 is 1652573071232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2118861608161 + 202842144400 = 1455631^2 + 450380^2 .

It is a cyclic number.

It is not a de Polignac number, because 2321703752561 - 2³⁰ = 2320630010737 is a prime.

It is a super-2 number, since 2×2321703752561² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2321703752531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1160851876280 + 1160851876281.

It is an arithmetic number, because the mean of its divisors is an integer number (1160851876281).

Almost surely, 2^{2321703752561} is an apocalyptic number.

It is an amenable number.

2321703752561 is a deficient number, since it is larger than the sum of its proper divisors (1).

2321703752561 is an equidigital number, since it uses as much as digits as its factorization.

2321703752561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 529200, while the sum is 44.

The spelling of 2321703752561 in words is "two trillion, three hundred twenty-one billion, seven hundred three million, seven hundred fifty-two thousand, five hundred sixty-one".