161335565234297 has 2 divisors, whose sum is σ = 161335565234298. Its totient is φ = 161335565234296.

The previous prime is 161335565234231. The next prime is 161335565234317. The reversal of 161335565234297 is 792432565533161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122003865527296 + 39331699707001 = 11045536^2 + 6271499^2 .

It is a cyclic number.

It is not a de Polignac number, because 161335565234297 - 2¹⁶ = 161335565168761 is a prime.

It is not a weakly prime, because it can be changed into another prime (161335565224297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80667782617148 + 80667782617149.

It is an arithmetic number, because the mean of its divisors is an integer number (80667782617149).

Almost surely, 2^{161335565234297} is an apocalyptic number.

It is an amenable number.

161335565234297 is a deficient number, since it is larger than the sum of its proper divisors (1).

161335565234297 is an equidigital number, since it uses as much as digits as its factorization.

161335565234297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 122472000, while the sum is 62.

The spelling of 161335565234297 in words is "one hundred sixty-one trillion, three hundred thirty-five billion, five hundred sixty-five million, two hundred thirty-four thousand, two hundred ninety-seven".