10561111055 has 16 divisors (see below), whose sum is σ = 13848274944. Its totient is φ = 7668130080.

The previous prime is 10561111039. The next prime is 10561111087. The reversal of 10561111055 is 55011116501.

It is not a de Polignac number, because 10561111055 - 2⁴ = 10561111039 is a prime.

It is a super-2 number, since 2×10561111055² (a number of 21 digits) contains 22 as substring.

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 (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124787 + ... + 191556.

It is an arithmetic number, because the mean of its divisors is an integer number (865517184).

Almost surely, 2^10561111055 is an apocalyptic number.

10561111055 is a deficient number, since it is larger than the sum of its proper divisors (3287163889).

10561111055 is a wasteful number, since it uses less digits than its factorization.

10561111055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316966.

The product of its (nonzero) digits is 750, while the sum is 26.

Adding to 10561111055 its reverse (55011116501), we get a palindrome (65572227556).

It can be divided in two parts, 1056 and 1111055, that added together give a palindrome (1112111).

The spelling of 10561111055 in words is "ten billion, five hundred sixty-one million, one hundred eleven thousand, fifty-five".