61055560605509 has 8 divisors (see below), whose sum is σ = 61115416380000. Its totient is φ = 60995718636400.

The previous prime is 61055560605491. The next prime is 61055560605587. The reversal of 61055560605509 is 90550606555016.

61055560605509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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-61055560605509 is a prime.

It is a super-2 number, since 2×61055560605509² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61055560605709) 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 7 ways as a sum of consecutive naturals, for example, 5409314 + ... + 12303324.

It is an arithmetic number, because the mean of its divisors is an integer number (7639427047500).

Almost surely, 2^{61055560605509} is an apocalyptic number.

It is an amenable number.

61055560605509 is a deficient number, since it is larger than the sum of its proper divisors (59855774491).

61055560605509 is a wasteful number, since it uses less digits than its factorization.

61055560605509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6902691.

The product of its (nonzero) digits is 6075000, while the sum is 53.

The spelling of 61055560605509 in words is "sixty-one trillion, fifty-five billion, five hundred sixty million, six hundred five thousand, five hundred nine".