2660166650 has 12 divisors (see below), whose sum is σ = 4947910062. Its totient is φ = 1064066640.

The previous prime is 2660166643. The next prime is 2660166661. The reversal of 2660166650 is 566610662.

It can be written as a sum of positive squares in 3 ways, for example, as 1729977649 + 930189001 = 41593^2 + 30499^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26601617 + ... + 26601716.

Almost surely, 2^2660166650 is an apocalyptic number.

2660166650 is a deficient number, since it is larger than the sum of its proper divisors (2287743412).

2660166650 is a wasteful number, since it uses less digits than its factorization.

2660166650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53203345 (or 53203340 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 2660166650 is about 51576.8034100602. The cubic root of 2660166650 is about 1385.5949170415.

The spelling of 2660166650 in words is "two billion, six hundred sixty million, one hundred sixty-six thousand, six hundred fifty".