2066667465281 has 2 divisors, whose sum is σ = 2066667465282. Its totient is φ = 2066667465280.

The previous prime is 2066667465241. The next prime is 2066667465323. The reversal of 2066667465281 is 1825647666602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1519302760000 + 547364705281 = 1232600^2 + 739841^2 .

It is a cyclic number.

It is not a de Polignac number, because 2066667465281 - 2²² = 2066663270977 is a prime.

It is a super-2 number, since 2×2066667465281² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2066667465281.

It is not a weakly prime, because it can be changed into another prime (2066667465241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1033333732640 + 1033333732641.

It is an arithmetic number, because the mean of its divisors is an integer number (1033333732641).

Almost surely, 2^{2066667465281} is an apocalyptic number.

It is an amenable number.

2066667465281 is a deficient number, since it is larger than the sum of its proper divisors (1).

2066667465281 is an equidigital number, since it uses as much as digits as its factorization.

2066667465281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34836480, while the sum is 59.

The spelling of 2066667465281 in words is "two trillion, sixty-six billion, six hundred sixty-seven million, four hundred sixty-five thousand, two hundred eighty-one".