655555566061 has 8 divisors (see below), whose sum is σ = 715178872800. Its totient is φ = 595936817040.

The previous prime is 655555566007. The next prime is 655555566103. The reversal of 655555566061 is 160665555556.

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

It is a cyclic number.

It is not a de Polignac number, because 655555566061 - 2³⁹ = 105799752173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 655555565993 and 655555566011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655555566461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 835146 + ... + 1417243.

It is an arithmetic number, because the mean of its divisors is an integer number (89397359100).

Almost surely, 2^655555566061 is an apocalyptic number.

It is an amenable number.

655555566061 is a deficient number, since it is larger than the sum of its proper divisors (59623306739).

655555566061 is a wasteful number, since it uses less digits than its factorization.

655555566061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2278859.

The product of its (nonzero) digits is 20250000, while the sum is 55.

The spelling of 655555566061 in words is "six hundred fifty-five billion, five hundred fifty-five million, five hundred sixty-six thousand, sixty-one".