161505067 has 2 divisors, whose sum is σ = 161505068. Its totient is φ = 161505066.

The previous prime is 161505061. The next prime is 161505079. The reversal of 161505067 is 760505161.

161505067 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 is a cyclic number.

It is not a de Polignac number, because 161505067 - 2¹¹ = 161503019 is a prime.

It is not a weakly prime, because it can be changed into another prime (161505061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80752533 + 80752534.

It is an arithmetic number, because the mean of its divisors is an integer number (80752534).

Almost surely, 2^161505067 is an apocalyptic number.

161505067 is a deficient number, since it is larger than the sum of its proper divisors (1).

161505067 is an equidigital number, since it uses as much as digits as its factorization.

161505067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 161505067 is about 12708.4643840237. The cubic root of 161505067 is about 544.5804553881.

The spelling of 161505067 in words is "one hundred sixty-one million, five hundred five thousand, sixty-seven".