161410563569 has 2 divisors, whose sum is σ = 161410563570. Its totient is φ = 161410563568.

The previous prime is 161410563551. The next prime is 161410563661. The reversal of 161410563569 is 965365014161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118762944400 + 42647619169 = 344620^2 + 206513^2 .

It is a cyclic number.

It is not a de Polignac number, because 161410563569 - 2¹² = 161410559473 is a prime.

It is a super-2 number, since 2×161410563569² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (161410563539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80705281784 + 80705281785.

It is an arithmetic number, because the mean of its divisors is an integer number (80705281785).

Almost surely, 2^161410563569 is an apocalyptic number.

It is an amenable number.

161410563569 is a deficient number, since it is larger than the sum of its proper divisors (1).

161410563569 is an equidigital number, since it uses as much as digits as its factorization.

161410563569 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 583200, while the sum is 47.

The spelling of 161410563569 in words is "one hundred sixty-one billion, four hundred ten million, five hundred sixty-three thousand, five hundred sixty-nine".