1005555065656 has 24 divisors (see below), whose sum is σ = 1989870919920. Its totient is φ = 476315556048.

The previous prime is 1005555065591. The next prime is 1005555065687. The reversal of 1005555065656 is 6565605555001.

It is a super-2 number, since 2×1005555065656² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 174089056 + ... + 174094831.

It is an arithmetic number, because the mean of its divisors is an integer number (82911288330).

Almost surely, 2^{1005555065656} is an apocalyptic number.

It is an amenable number.

1005555065656 is a deficient number, since it is larger than the sum of its proper divisors (984315854264).

1005555065656 is a wasteful number, since it uses less digits than its factorization.

1005555065656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348183931 (or 348183908 counting only the distinct ones).

The product of its (nonzero) digits is 3375000, while the sum is 49.

The spelling of 1005555065656 in words is "one trillion, five billion, five hundred fifty-five million, sixty-five thousand, six hundred fifty-six".