105500008685 has 4 divisors (see below), whose sum is σ = 126600010428. Its totient is φ = 84400006944.

The previous prime is 105500008667. The next prime is 105500008709. The reversal of 105500008685 is 586800005501.

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 28294940521 + 77205068164 = 168211^2 + 277858^2 .

It is a cyclic number.

It is not a de Polignac number, because 105500008685 - 2⁸ = 105500008429 is a prime.

It is a super-2 number, since 2×105500008685² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent 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, 10550000864 + ... + 10550000873.

It is an arithmetic number, because the mean of its divisors is an integer number (31650002607).

Almost surely, 2^105500008685 is an apocalyptic number.

It is an amenable number.

105500008685 is a deficient number, since it is larger than the sum of its proper divisors (21100001743).

105500008685 is an equidigital number, since it uses as much as digits as its factorization.

105500008685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21100001742.

The product of its (nonzero) digits is 48000, while the sum is 38.

The spelling of 105500008685 in words is "one hundred five billion, five hundred million, eight thousand, six hundred eighty-five".