2066850881 has 2 divisors, whose sum is σ = 2066850882. Its totient is φ = 2066850880.

The previous prime is 2066850859. The next prime is 2066850883. The reversal of 2066850881 is 1880586602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1850290225 + 216560656 = 43015^2 + 14716^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2066850881 is a prime.

It is a super-2 number, since 2×2066850881² = 8543745128580952322, which contains 22 as substring.

Together with 2066850883, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2066850883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1033425440 + 1033425441.

It is an arithmetic number, because the mean of its divisors is an integer number (1033425441).

Almost surely, 2^2066850881 is an apocalyptic number.

It is an amenable number.

2066850881 is a deficient number, since it is larger than the sum of its proper divisors (1).

2066850881 is an equidigital number, since it uses as much as digits as its factorization.

2066850881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 184320, while the sum is 44.

The square root of 2066850881 is about 45462.6316990119. The cubic root of 2066850881 is about 1273.8052898956.

The spelling of 2066850881 in words is "two billion, sixty-six million, eight hundred fifty thousand, eight hundred eighty-one".