161550067207 has 2 divisors, whose sum is σ = 161550067208. Its totient is φ = 161550067206.

The previous prime is 161550067199. The next prime is 161550067229. The reversal of 161550067207 is 702760055161.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 161550067207 - 2³ = 161550067199 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 161550067207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161550067277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80775033603 + 80775033604.

It is an arithmetic number, because the mean of its divisors is an integer number (80775033604).

Almost surely, 2^161550067207 is an apocalyptic number.

161550067207 is a deficient number, since it is larger than the sum of its proper divisors (1).

161550067207 is an equidigital number, since it uses as much as digits as its factorization.

161550067207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 88200, while the sum is 40.

The spelling of 161550067207 in words is "one hundred sixty-one billion, five hundred fifty million, sixty-seven thousand, two hundred seven".