55561061050509 has 32 divisors (see below), whose sum is σ = 84687774695424. Its totient is φ = 31740441347520.

The previous prime is 55561061050447. The next prime is 55561061050519. The reversal of 55561061050509 is 90505016016555.

It is a happy number.

It is not a de Polignac number, because 55561061050509 - 2⁹ = 55561061049997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55561061050519) 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 31 ways as a sum of consecutive naturals, for example, 1356020347 + ... + 1356061319.

It is an arithmetic number, because the mean of its divisors is an integer number (2646492959232).

Almost surely, 2^{55561061050509} is an apocalyptic number.

It is an amenable number.

55561061050509 is a deficient number, since it is larger than the sum of its proper divisors (29126713644915).

55561061050509 is a wasteful number, since it uses less digits than its factorization.

55561061050509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57177.

The product of its (nonzero) digits is 1012500, while the sum is 48.

The spelling of 55561061050509 in words is "fifty-five trillion, five hundred sixty-one billion, sixty-one million, fifty thousand, five hundred nine".