11055100100561 has 8 divisors (see below), whose sum is σ = 12159779526048. Its totient is φ = 10050090999300.

The previous prime is 11055100100537. The next prime is 11055100100593. The reversal of 11055100100561 is 16500100155011.

It is not a de Polignac number, because 11055100100561 - 2³⁰ = 11054026358737 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11055100100561.

It is not an unprimeable number, because it can be changed into a prime (11055100100501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4152928835 + ... + 4152931496.

It is an arithmetic number, because the mean of its divisors is an integer number (1519972440756).

Almost surely, 2^{11055100100561} is an apocalyptic number.

11055100100561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11055100100561 is a deficient number, since it is larger than the sum of its proper divisors (1104679425487).

11055100100561 is an frugal number, since it uses more digits than its factorization.

11055100100561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8305860364 (or 8305860342 counting only the distinct ones).

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

Adding to 11055100100561 its reverse (16500100155011), we get a palindrome (27555200255572).

The spelling of 11055100100561 in words is "eleven trillion, fifty-five billion, one hundred million, one hundred thousand, five hundred sixty-one".