10000561085 has 4 divisors (see below), whose sum is σ = 12000673308. Its totient is φ = 8000448864.

The previous prime is 10000561063. The next prime is 10000561111. The reversal of 10000561085 is 58016500001.

10000561085 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58016500001 = 5431 ⋅10682471.

It can be written as a sum of positive squares in 2 ways, for example, as 6211173721 + 3789387364 = 78811^2 + 61558^2 .

It is a cyclic number.

It is not a de Polignac number, because 10000561085 - 2¹² = 10000556989 is a prime.

It is a super-2 number, since 2×10000561085² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1000056104 + ... + 1000056113.

It is an arithmetic number, because the mean of its divisors is an integer number (3000168327).

Almost surely, 2^10000561085 is an apocalyptic number.

It is an amenable number.

10000561085 is a deficient number, since it is larger than the sum of its proper divisors (2000112223).

10000561085 is an equidigital number, since it uses as much as digits as its factorization.

10000561085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000112222.

The product of its (nonzero) digits is 1200, while the sum is 26.

The spelling of 10000561085 in words is "ten billion, five hundred sixty-one thousand, eighty-five".