100561000106005 has 4 divisors (see below), whose sum is σ = 120673200127212. Its totient is φ = 80448800084800.

The previous prime is 100561000105997. The next prime is 100561000106029. The reversal of 100561000106005 is 500601000165001.

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 41040500313796 + 59520499792209 = 6406286^2 + 7714953^2 .

It is not a de Polignac number, because 100561000106005 - 2³ = 100561000105997 is a prime.

It is a super-5 number, since 5×100561000106005⁵ (a number of 71 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10056100010596 + ... + 10056100010605.

It is an arithmetic number, because the mean of its divisors is an integer number (30168300031803).

Almost surely, 2^{100561000106005} is an apocalyptic number.

It is an amenable number.

100561000106005 is a deficient number, since it is larger than the sum of its proper divisors (20112200021207).

100561000106005 is an equidigital number, since it uses as much as digits as its factorization.

100561000106005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20112200021206.

The product of its (nonzero) digits is 900, while the sum is 25.

The spelling of 100561000106005 in words is "one hundred trillion, five hundred sixty-one billion, one hundred six thousand, five".