6651666050 has 24 divisors (see below), whose sum is σ = 12378025092. Its totient is φ = 2659392000.

The previous prime is 6651665989. The next prime is 6651666067. The reversal of 6651666050 is 506661566.

It can be written as a sum of positive squares in 6 ways, for example, as 4197355369 + 2454310681 = 64787^2 + 49541^2 .

It is a super-2 number, since 2×6651666050² = 88489322481445205000, which contains 22 as substring.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6651665989 and 6651666007.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77270 + ... + 138830.

Almost surely, 2^6651666050 is an apocalyptic number.

6651666050 is a deficient number, since it is larger than the sum of its proper divisors (5726359042).

6651666050 is a wasteful number, since it uses less digits than its factorization.

6651666050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63734 (or 63729 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 41.

The square root of 6651666050 is about 81557.7467197323. The cubic root of 6651666050 is about 1880.6593856101.

The spelling of 6651666050 in words is "six billion, six hundred fifty-one million, six hundred sixty-six thousand, fifty".