555661066065 has 32 divisors (see below), whose sum is σ = 1016112577536. Its totient is φ = 254004830400.

The previous prime is 555661066001. The next prime is 555661066123. The reversal of 555661066065 is 560660166555.

It is not a de Polignac number, because 555661066065 - 2⁶ = 555661066001 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 555661065999 and 555661066017.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2431990 + ... + 2650640.

It is an arithmetic number, because the mean of its divisors is an integer number (31753518048).

Almost surely, 2^555661066065 is an apocalyptic number.

It is an amenable number.

555661066065 is a deficient number, since it is larger than the sum of its proper divisors (460451511471).

555661066065 is a wasteful number, since it uses less digits than its factorization.

555661066065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242869.

The product of its (nonzero) digits is 4860000, while the sum is 51.

The spelling of 555661066065 in words is "five hundred fifty-five billion, six hundred sixty-one million, sixty-six thousand, sixty-five".