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BaseRepresentation
bin1001101010111111101…
…0000111011111110001
3120212212222100211102011
42122233322013133301
510210243430130410
6204155521322521
715001412511523
oct2325772073761
9525788324364
10166160005105
1164516a9a176
1228252796441
1312890528563
148083a93a13
1544c767e18a
hex26afe877f1

166160005105 has 4 divisors (see below), whose sum is σ = 199392006132. Its totient is φ = 132928004080.

The previous prime is 166160005103. The next prime is 166160005111. The reversal of 166160005105 is 501500061661.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 80399468304 + 85760536801 = 283548^2 + 292849^2 .

It is not a de Polignac number, because 166160005105 - 21 = 166160005103 is a prime.

It is a super-2 number, since 2×1661600051052 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166160005103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16616000506 + ... + 16616000515.

It is an arithmetic number, because the mean of its divisors is an integer number (49848001533).

Almost surely, 2166160005105 is an apocalyptic number.

It is an amenable number.

166160005105 is a deficient number, since it is larger than the sum of its proper divisors (33232001027).

166160005105 is an equidigital number, since it uses as much as digits as its factorization.

166160005105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33232001026.

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

Adding to 166160005105 its reverse (501500061661), we get a palindrome (667660066766).

The spelling of 166160005105 in words is "one hundred sixty-six billion, one hundred sixty million, five thousand, one hundred five".

Divisors: 1 5 33232001021 166160005105