15794240321 has 2 divisors, whose sum is σ = 15794240322. Its totient is φ = 15794240320.

The previous prime is 15794240309. The next prime is 15794240327. The reversal of 15794240321 is 12304249751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15702846721 + 91393600 = 125311^2 + 9560^2 .

It is a cyclic number.

It is not a de Polignac number, because 15794240321 - 2¹⁰ = 15794239297 is a prime.

It is not a weakly prime, because it can be changed into another prime (15794240327) 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, 7897120160 + 7897120161.

It is an arithmetic number, because the mean of its divisors is an integer number (7897120161).

Almost surely, 2^15794240321 is an apocalyptic number.

It is an amenable number.

15794240321 is a deficient number, since it is larger than the sum of its proper divisors (1).

15794240321 is an equidigital number, since it uses as much as digits as its factorization.

15794240321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 38.

The spelling of 15794240321 in words is "fifteen billion, seven hundred ninety-four million, two hundred forty thousand, three hundred twenty-one".