2005645135211 has 2 divisors, whose sum is σ = 2005645135212. Its totient is φ = 2005645135210.

The previous prime is 2005645135199. The next prime is 2005645135229. The reversal of 2005645135211 is 1125315465002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2005645135211 - 2⁶ = 2005645135147 is a prime.

It is a super-2 number, since 2×2005645135211² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2005645135231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1002822567605 + 1002822567606.

It is an arithmetic number, because the mean of its divisors is an integer number (1002822567606).

Almost surely, 2^{2005645135211} is an apocalyptic number.

2005645135211 is a deficient number, since it is larger than the sum of its proper divisors (1).

2005645135211 is an equidigital number, since it uses as much as digits as its factorization.

2005645135211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36000, while the sum is 35.

The spelling of 2005645135211 in words is "two trillion, five billion, six hundred forty-five million, one hundred thirty-five thousand, two hundred eleven".