161006150065 has 4 divisors (see below), whose sum is σ = 193207380084. Its totient is φ = 128804920048.

The previous prime is 161006150021. The next prime is 161006150077. The reversal of 161006150065 is 560051600161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 560051600161 = 359981 ⋅1555781.

It can be written as a sum of positive squares in 2 ways, for example, as 42303851041 + 118702299024 = 205679^2 + 344532^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161006150065 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16100615002 + ... + 16100615011.

It is an arithmetic number, because the mean of its divisors is an integer number (48301845021).

Almost surely, 2^161006150065 is an apocalyptic number.

It is an amenable number.

161006150065 is a deficient number, since it is larger than the sum of its proper divisors (32201230019).

161006150065 is an equidigital number, since it uses as much as digits as its factorization.

161006150065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32201230018.

The product of its (nonzero) digits is 5400, while the sum is 31.

The spelling of 161006150065 in words is "one hundred sixty-one billion, six million, one hundred fifty thousand, sixty-five".