2305451515321 has 2 divisors, whose sum is σ = 2305451515322. Its totient is φ = 2305451515320.

The previous prime is 2305451515309. The next prime is 2305451515343. The reversal of 2305451515321 is 1235151545032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1368282309696 + 937169205625 = 1169736^2 + 968075^2 .

It is a cyclic number.

It is not a de Polignac number, because 2305451515321 - 2²³ = 2305443126713 is a prime.

It is not a weakly prime, because it can be changed into another prime (2305451515421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1152725757660 + 1152725757661.

It is an arithmetic number, because the mean of its divisors is an integer number (1152725757661).

Almost surely, 2^{2305451515321} is an apocalyptic number.

It is an amenable number.

2305451515321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2305451515321 is an equidigital number, since it uses as much as digits as its factorization.

2305451515321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90000, while the sum is 37.

The spelling of 2305451515321 in words is "two trillion, three hundred five billion, four hundred fifty-one million, five hundred fifteen thousand, three hundred twenty-one".