210640133009 has 2 divisors, whose sum is σ = 210640133010. Its totient is φ = 210640133008.

The previous prime is 210640132951. The next prime is 210640133017. The reversal of 210640133009 is 900331046012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114014275600 + 96625857409 = 337660^2 + 310847^2 .

It is a cyclic number.

It is not a de Polignac number, because 210640133009 - 2⁸ = 210640132753 is a prime.

It is a super-3 number, since 3×210640133009³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (210640133059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105320066504 + 105320066505.

It is an arithmetic number, because the mean of its divisors is an integer number (105320066505).

Almost surely, 2^210640133009 is an apocalyptic number.

It is an amenable number.

210640133009 is a deficient number, since it is larger than the sum of its proper divisors (1).

210640133009 is an equidigital number, since it uses as much as digits as its factorization.

210640133009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 29.

The spelling of 210640133009 in words is "two hundred ten billion, six hundred forty million, one hundred thirty-three thousand, nine".