1166551610650 has 48 divisors (see below), whose sum is σ = 2199817756224. Its totient is φ = 460163998080.

The previous prime is 1166551610621. The next prime is 1166551610659. The reversal of 1166551610650 is 560161556611.

It is a junction number, because it is equal to n+sod(n) for n = 1166551610597 and 1166551610606.

It is not an unprimeable number, because it can be changed into a prime (1166551610659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32419569 + ... + 32455531.

It is an arithmetic number, because the mean of its divisors is an integer number (45829536588).

Almost surely, 2^{1166551610650} is an apocalyptic number.

1166551610650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1166551610650 is a deficient number, since it is larger than the sum of its proper divisors (1033266145574).

1166551610650 is a wasteful number, since it uses less digits than its factorization.

1166551610650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44935 (or 44930 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 43.

The spelling of 1166551610650 in words is "one trillion, one hundred sixty-six billion, five hundred fifty-one million, six hundred ten thousand, six hundred fifty".