2066430551 has 4 divisors (see below), whose sum is σ = 2066533704. Its totient is φ = 2066327400.

The previous prime is 2066430533. The next prime is 2066430559. The reversal of 2066430551 is 1550346602.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2066430551 - 2¹⁴ = 2066414167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2066430559) 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 in 3 ways as a sum of consecutive naturals, for example, 10760 + ... + 65181.

It is an arithmetic number, because the mean of its divisors is an integer number (516633426).

Almost surely, 2^2066430551 is an apocalyptic number.

2066430551 is a deficient number, since it is larger than the sum of its proper divisors (103153).

2066430551 is an equidigital number, since it uses as much as digits as its factorization.

2066430551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103152.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 2066430551 is about 45458.0086563413. The cubic root of 2066430551 is about 1273.7189339031.

It can be divided in two parts, 20664 and 30551, that added together give a palindrome (51215).

The spelling of 2066430551 in words is "two billion, sixty-six million, four hundred thirty thousand, five hundred fifty-one".