2180016001811 has 2 divisors, whose sum is σ = 2180016001812. Its totient is φ = 2180016001810.

The previous prime is 2180016001771. The next prime is 2180016001873. The reversal of 2180016001811 is 1181006100812.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2180016001811 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2180016001711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1090008000905 + 1090008000906.

It is an arithmetic number, because the mean of its divisors is an integer number (1090008000906).

Almost surely, 2^{2180016001811} is an apocalyptic number.

2180016001811 is a deficient number, since it is larger than the sum of its proper divisors (1).

2180016001811 is an equidigital number, since it uses as much as digits as its factorization.

2180016001811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 29.

Subtracting from 2180016001811 its reverse (1181006100812), we obtain a palindrome (999009900999).

The spelling of 2180016001811 in words is "two trillion, one hundred eighty billion, sixteen million, one thousand, eight hundred eleven".