161065552320353 has 2 divisors, whose sum is σ = 161065552320354. Its totient is φ = 161065552320352.

The previous prime is 161065552320307. The next prime is 161065552320403. The reversal of 161065552320353 is 353023255560161.

161065552320353 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 157236126020689 + 3829426299664 = 12539383^2 + 1956892^2 .

It is a cyclic number.

It is not a de Polignac number, because 161065552320353 - 2¹² = 161065552316257 is a prime.

It is a super-2 number, since 2×161065552320353² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161065552320298 and 161065552320307.

It is not a weakly prime, because it can be changed into another prime (161065552340353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80532776160176 + 80532776160177.

It is an arithmetic number, because the mean of its divisors is an integer number (80532776160177).

Almost surely, 2^{161065552320353} is an apocalyptic number.

It is an amenable number.

161065552320353 is a deficient number, since it is larger than the sum of its proper divisors (1).

161065552320353 is an equidigital number, since it uses as much as digits as its factorization.

161065552320353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2430000, while the sum is 47.

The spelling of 161065552320353 in words is "one hundred sixty-one trillion, sixty-five billion, five hundred fifty-two million, three hundred twenty thousand, three hundred fifty-three".