161063543 has 2 divisors, whose sum is σ = 161063544. Its totient is φ = 161063542.

The previous prime is 161063527. The next prime is 161063557. The reversal of 161063543 is 345360161.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (345360161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 161063543 - 2⁴ = 161063527 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161063563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80531771 + 80531772.

It is an arithmetic number, because the mean of its divisors is an integer number (80531772).

Almost surely, 2^161063543 is an apocalyptic number.

161063543 is a deficient number, since it is larger than the sum of its proper divisors (1).

161063543 is an equidigital number, since it uses as much as digits as its factorization.

161063543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 161063543 is about 12691.0812384131. The cubic root of 161063543 is about 544.0837428300.

The spelling of 161063543 in words is "one hundred sixty-one million, sixty-three thousand, five hundred forty-three".