161063563 has 2 divisors, whose sum is σ = 161063564. Its totient is φ = 161063562.

The previous prime is 161063561. The next prime is 161063587. The reversal of 161063563 is 365360161.

It is a weak prime.

It is an emirp because it is prime and its reverse (365360161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 161063563 - 2¹ = 161063561 is a prime.

Together with 161063561, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (161063561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80531781 + 80531782.

It is an arithmetic number, because the mean of its divisors is an integer number (80531782).

Almost surely, 2^161063563 is an apocalyptic number.

161063563 is a deficient number, since it is larger than the sum of its proper divisors (1).

161063563 is an equidigital number, since it uses as much as digits as its factorization.

161063563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 161063563 is about 12691.0820263680. The cubic root of 161063563 is about 544.0837653505.

The spelling of 161063563 in words is "one hundred sixty-one million, sixty-three thousand, five hundred sixty-three".