10010550005561 has 12 divisors (see below), whose sum is σ = 11652951047760. Its totient is φ = 8574557884200.

The previous prime is 10010550005507. The next prime is 10010550005581. The reversal of 10010550005561 is 16550005501001.

It is a happy number.

It is not a de Polignac number, because 10010550005561 - 2³⁰ = 10009476263737 is a prime.

It is a super-2 number, since 2×10010550005561² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10010550005581) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 70327571 + ... + 70469768.

It is an arithmetic number, because the mean of its divisors is an integer number (971079253980).

Almost surely, 2^{10010550005561} is an apocalyptic number.

It is an amenable number.

10010550005561 is a deficient number, since it is larger than the sum of its proper divisors (1642401042199).

10010550005561 is a wasteful number, since it uses less digits than its factorization.

10010550005561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140798804 (or 140798797 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 29.

Adding to 10010550005561 its reverse (16550005501001), we get a palindrome (26560555506562).

The spelling of 10010550005561 in words is "ten trillion, ten billion, five hundred fifty million, five thousand, five hundred sixty-one".