161050005 has 32 divisors (see below), whose sum is σ = 286984320. Its totient is φ = 85691520.

The previous prime is 161049989. The next prime is 161050013. The reversal of 161050005 is 500050161.

161050005 is a `hidden beast` number, since 1 + 610 + 50 + 0 + 0 + 5 = 666.

It is not a de Polignac number, because 161050005 - 2⁴ = 161049989 is a prime.

It is a super-2 number, since 2×161050005² = 51874208221000050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 161050005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69465 + ... + 71745.

It is an arithmetic number, because the mean of its divisors is an integer number (8968260).

Almost surely, 2^161050005 is an apocalyptic number.

161050005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

161050005 is a deficient number, since it is larger than the sum of its proper divisors (125934315).

161050005 is a wasteful number, since it uses less digits than its factorization.

161050005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2818 (or 2812 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 161050005 is about 12690.5478605141. The cubic root of 161050005 is about 544.0684983040.

It can be divided in two parts, 1610 and 50005, that added together give a palindrome (51615).

The spelling of 161050005 in words is "one hundred sixty-one million, fifty thousand, five".