161848855416337 has 2 divisors, whose sum is σ = 161848855416338. Its totient is φ = 161848855416336.

The previous prime is 161848855416329. The next prime is 161848855416349. The reversal of 161848855416337 is 733614558848161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 145236025034881 + 16612830381456 = 12051391^2 + 4075884^2 .

It is a cyclic number.

It is not a de Polignac number, because 161848855416337 - 2³ = 161848855416329 is a prime.

It is not a weakly prime, because it can be changed into another prime (161848855476337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80924427708168 + 80924427708169.

It is an arithmetic number, because the mean of its divisors is an integer number (80924427708169).

Almost surely, 2^{161848855416337} is an apocalyptic number.

It is an amenable number.

161848855416337 is a deficient number, since it is larger than the sum of its proper divisors (1).

161848855416337 is an equidigital number, since it uses as much as digits as its factorization.

161848855416337 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 464486400, while the sum is 70.

The spelling of 161848855416337 in words is "one hundred sixty-one trillion, eight hundred forty-eight billion, eight hundred fifty-five million, four hundred sixteen thousand, three hundred thirty-seven".