2066203591 has 2 divisors, whose sum is σ = 2066203592. Its totient is φ = 2066203590.

The previous prime is 2066203549. The next prime is 2066203603. The reversal of 2066203591 is 1953026602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2066203591 - 2¹⁹ = 2065679303 is a prime.

It is a super-2 number, since 2×2066203591² = 8538394558922590562, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2066209591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1033101795 + 1033101796.

It is an arithmetic number, because the mean of its divisors is an integer number (1033101796).

Almost surely, 2^2066203591 is an apocalyptic number.

2066203591 is a deficient number, since it is larger than the sum of its proper divisors (1).

2066203591 is an equidigital number, since it uses as much as digits as its factorization.

2066203591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 2066203591 is about 45455.5122179918. The cubic root of 2066203591 is about 1273.6723005376.

The spelling of 2066203591 in words is "two billion, sixty-six million, two hundred three thousand, five hundred ninety-one".