2009666051 has 2 divisors, whose sum is σ = 2009666052. Its totient is φ = 2009666050.

The previous prime is 2009666039. The next prime is 2009666089. The reversal of 2009666051 is 1506669002.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2009666051 is a prime.

It is not a weakly prime, because it can be changed into another prime (2009666011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1004833025 + 1004833026.

It is an arithmetic number, because the mean of its divisors is an integer number (1004833026).

Almost surely, 2^2009666051 is an apocalyptic number.

2009666051 is a deficient number, since it is larger than the sum of its proper divisors (1).

2009666051 is an equidigital number, since it uses as much as digits as its factorization.

2009666051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 2009666051 is about 44829.2990241873. The cubic root of 2009666051 is about 1261.9475322331.

The spelling of 2009666051 in words is "two billion, nine million, six hundred sixty-six thousand, fifty-one".