9704721859457 has 2 divisors, whose sum is σ = 9704721859458. Its totient is φ = 9704721859456.

The previous prime is 9704721859409. The next prime is 9704721859463. The reversal of 9704721859457 is 7549581274079.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5813133169936 + 3891588689521 = 2411044^2 + 1972711^2 .

It is a cyclic number.

It is not a de Polignac number, because 9704721859457 - 2⁸ = 9704721859201 is a prime.

It is not a weakly prime, because it can be changed into another prime (9704721859757) 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, 4852360929728 + 4852360929729.

It is an arithmetic number, because the mean of its divisors is an integer number (4852360929729).

Almost surely, 2^{9704721859457} is an apocalyptic number.

It is an amenable number.

9704721859457 is a deficient number, since it is larger than the sum of its proper divisors (1).

9704721859457 is an equidigital number, since it uses as much as digits as its factorization.

9704721859457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 177811200, while the sum is 68.

The spelling of 9704721859457 in words is "nine trillion, seven hundred four billion, seven hundred twenty-one million, eight hundred fifty-nine thousand, four hundred fifty-seven".