161071266 has 8 divisors (see below), whose sum is σ = 322142544. Its totient is φ = 53690420.

The previous prime is 161071241. The next prime is 161071271. The reversal of 161071266 is 662170161.

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

161071266 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13422600 + ... + 13422611.

It is an arithmetic number, because the mean of its divisors is an integer number (40267818).

Almost surely, 2^161071266 is an apocalyptic number.

161071266 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.

161071266 is a wasteful number, since it uses less digits than its factorization.

161071266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26845216.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 161071266 is about 12691.3855035611. The cubic root of 161071266 is about 544.0924389663.

The spelling of 161071266 in words is "one hundred sixty-one million, seventy-one thousand, two hundred sixty-six".