55500105605561 has 8 divisors (see below), whose sum is σ = 57952205062080. Its totient is φ = 53051260431312.

The previous prime is 55500105605513. The next prime is 55500105605569. The reversal of 55500105605561 is 16550650100555.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55500105605561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55500105605569) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 813535706 + ... + 813603923.

It is an arithmetic number, because the mean of its divisors is an integer number (7244025632760).

Almost surely, 2^{55500105605561} is an apocalyptic number.

It is an amenable number.

55500105605561 is a deficient number, since it is larger than the sum of its proper divisors (2452099456519).

55500105605561 is a wasteful number, since it uses less digits than its factorization.

55500105605561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1627141135.

The product of its (nonzero) digits is 562500, while the sum is 44.

The spelling of 55500105605561 in words is "fifty-five trillion, five hundred billion, one hundred five million, six hundred five thousand, five hundred sixty-one".