105561660556 has 48 divisors (see below), whose sum is σ = 203606216352. Its totient is φ = 47487872000.

The previous prime is 105561660553. The next prime is 105561660563. The reversal of 105561660556 is 655066165501.

It is a super-2 number, since 2×105561660556² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (105561660551) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 19270890 + ... + 19276366.

It is an arithmetic number, because the mean of its divisors is an integer number (4241796174).

Almost surely, 2^105561660556 is an apocalyptic number.

It is an amenable number.

105561660556 is a deficient number, since it is larger than the sum of its proper divisors (98044555796).

105561660556 is a wasteful number, since it uses less digits than its factorization.

105561660556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9930 (or 9928 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 46.

The spelling of 105561660556 in words is "one hundred five billion, five hundred sixty-one million, six hundred sixty thousand, five hundred fifty-six".