105566620105 has 4 divisors (see below), whose sum is σ = 126679944132. Its totient is φ = 84453296080.

The previous prime is 105566620067. The next prime is 105566620151. The reversal of 105566620105 is 501026665501.

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 52525305856 + 53041314249 = 229184^2 + 230307^2 .

It is not a de Polignac number, because 105566620105 - 2²⁷ = 105432402377 is a prime.

It is a super-2 number, since 2×105566620105² (a number of 23 digits) contains 22 as substring.

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, 10556662006 + ... + 10556662015.

It is an arithmetic number, because the mean of its divisors is an integer number (31669986033).

Almost surely, 2^105566620105 is an apocalyptic number.

It is an amenable number.

105566620105 is a deficient number, since it is larger than the sum of its proper divisors (21113324027).

105566620105 is an equidigital number, since it uses as much as digits as its factorization.

105566620105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21113324026.

The product of its (nonzero) digits is 54000, while the sum is 37.

The spelling of 105566620105 in words is "one hundred five billion, five hundred sixty-six million, six hundred twenty thousand, one hundred five".