1606655166056 has 8 divisors (see below), whose sum is σ = 3012478436370. Its totient is φ = 803327583024.

The previous prime is 1606655166049. The next prime is 1606655166059. The reversal of 1606655166056 is 6506615566061.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1234396549156 + 372258616900 = 1111034^2 + 610130^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1606655166056² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1606655165989 and 1606655166007.

It is not an unprimeable number, because it can be changed into a prime (1606655166059) 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 as a sum of consecutive naturals, namely, 100415947871 + ... + 100415947886.

Almost surely, 2^{1606655166056} is an apocalyptic number.

It is an amenable number.

1606655166056 is a deficient number, since it is larger than the sum of its proper divisors (1405823270314).

1606655166056 is a wasteful number, since it uses less digits than its factorization.

1606655166056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200831895763 (or 200831895759 counting only the distinct ones).

The product of its (nonzero) digits is 5832000, while the sum is 53.

The spelling of 1606655166056 in words is "one trillion, six hundred six billion, six hundred fifty-five million, one hundred sixty-six thousand, fifty-six".