16530470306657 has 2 divisors, whose sum is σ = 16530470306658. Its totient is φ = 16530470306656.

The previous prime is 16530470306621. The next prime is 16530470306681. The reversal of 16530470306657 is 75660307403561.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8352105780001 + 8178364526656 = 2890001^2 + 2859784^2 .

It is a cyclic number.

It is not a de Polignac number, because 16530470306657 - 2⁶ = 16530470306593 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16530470306599 and 16530470306608.

It is not a weakly prime, because it can be changed into another prime (16530470308657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8265235153328 + 8265235153329.

It is an arithmetic number, because the mean of its divisors is an integer number (8265235153329).

Almost surely, 2^{16530470306657} is an apocalyptic number.

It is an amenable number.

16530470306657 is a deficient number, since it is larger than the sum of its proper divisors (1).

16530470306657 is an equidigital number, since it uses as much as digits as its factorization.

16530470306657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9525600, while the sum is 53.

The spelling of 16530470306657 in words is "sixteen trillion, five hundred thirty billion, four hundred seventy million, three hundred six thousand, six hundred fifty-seven".