161065552330399 has 2 divisors, whose sum is σ = 161065552330400. Its totient is φ = 161065552330398.

The previous prime is 161065552330271. The next prime is 161065552330469. The reversal of 161065552330399 is 993033255560161.

It is a strong prime.

It is an emirp because it is prime and its reverse (993033255560161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 161065552330399 - 2⁷ = 161065552330271 is a prime.

It is a super-2 number, since 2×161065552330399² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161065552330099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80532776165199 + 80532776165200.

It is an arithmetic number, because the mean of its divisors is an integer number (80532776165200).

Almost surely, 2^{161065552330399} is an apocalyptic number.

161065552330399 is a deficient number, since it is larger than the sum of its proper divisors (1).

161065552330399 is an equidigital number, since it uses as much as digits as its factorization.

161065552330399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19683000, while the sum is 58.

The spelling of 161065552330399 in words is "one hundred sixty-one trillion, sixty-five billion, five hundred fifty-two million, three hundred thirty thousand, three hundred ninety-nine".