2066656453 has 2 divisors, whose sum is σ = 2066656454. Its totient is φ = 2066656452.

The previous prime is 2066656399. The next prime is 2066656463. The reversal of 2066656453 is 3546566602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1126743489 + 939912964 = 33567^2 + 30658^2 .

It is a cyclic number.

It is not a de Polignac number, because 2066656453 - 2¹⁷ = 2066525381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2066656463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1033328226 + 1033328227.

It is an arithmetic number, because the mean of its divisors is an integer number (1033328227).

Almost surely, 2^2066656453 is an apocalyptic number.

It is an amenable number.

2066656453 is a deficient number, since it is larger than the sum of its proper divisors (1).

2066656453 is an equidigital number, since it uses as much as digits as its factorization.

2066656453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 777600, while the sum is 43.

The square root of 2066656453 is about 45460.4933211244. The cubic root of 2066656453 is about 1273.7653464913.

The spelling of 2066656453 in words is "two billion, sixty-six million, six hundred fifty-six thousand, four hundred fifty-three".