16197296657 has 2 divisors, whose sum is σ = 16197296658. Its totient is φ = 16197296656.

The previous prime is 16197296639. The next prime is 16197296683. The reversal of 16197296657 is 75669279161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12188380801 + 4008915856 = 110401^2 + 63316^2 .

It is a cyclic number.

It is not a de Polignac number, because 16197296657 - 2⁶ = 16197296593 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16197296596 and 16197296605.

It is not a weakly prime, because it can be changed into another prime (16197296257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8098648328 + 8098648329.

It is an arithmetic number, because the mean of its divisors is an integer number (8098648329).

Almost surely, 2^16197296657 is an apocalyptic number.

It is an amenable number.

16197296657 is a deficient number, since it is larger than the sum of its proper divisors (1).

16197296657 is an equidigital number, since it uses as much as digits as its factorization.

16197296657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8573040, while the sum is 59.

The spelling of 16197296657 in words is "sixteen billion, one hundred ninety-seven million, two hundred ninety-six thousand, six hundred fifty-seven".