2011006166501 has 2 divisors, whose sum is σ = 2011006166502. Its totient is φ = 2011006166500.

The previous prime is 2011006166483. The next prime is 2011006166621. The reversal of 2011006166501 is 1056616001102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1764194932900 + 246811233601 = 1328230^2 + 496801^2 .

It is a cyclic number.

It is not a de Polignac number, because 2011006166501 - 2²⁶ = 2010939057637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2011006166401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005503083250 + 1005503083251.

It is an arithmetic number, because the mean of its divisors is an integer number (1005503083251).

Almost surely, 2^{2011006166501} is an apocalyptic number.

It is an amenable number.

2011006166501 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011006166501 is an equidigital number, since it uses as much as digits as its factorization.

2011006166501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 29.

The spelling of 2011006166501 in words is "two trillion, eleven billion, six million, one hundred sixty-six thousand, five hundred one".