161377206 has 8 divisors (see below), whose sum is σ = 322754424. Its totient is φ = 53792400.

The previous prime is 161377163. The next prime is 161377253. The reversal of 161377206 is 602773161.

It is a sphenic number, since it is the product of 3 distinct primes.

161377206 is an admirable number.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 13448095 + ... + 13448106.

It is an arithmetic number, because the mean of its divisors is an integer number (40344303).

Almost surely, 2^161377206 is an apocalyptic number.

161377206 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161377206 is a wasteful number, since it uses less digits than its factorization.

161377206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26896206.

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 161377206 is about 12703.4328431334. The cubic root of 161377206 is about 544.4367055435.

The spelling of 161377206 in words is "one hundred sixty-one million, three hundred seventy-seven thousand, two hundred six".