2066543121 has 8 divisors (see below), whose sum is σ = 2755703104. Its totient is φ = 1377539280.

The previous prime is 2066543117. The next prime is 2066543153. The reversal of 2066543121 is 1213456602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2066543121 - 2² = 2066543117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2066543021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3541 + ... + 64386.

It is an arithmetic number, because the mean of its divisors is an integer number (344462888).

Almost surely, 2^2066543121 is an apocalyptic number.

It is an amenable number.

2066543121 is a deficient number, since it is larger than the sum of its proper divisors (689159983).

2066543121 is a wasteful number, since it uses less digits than its factorization.

2066543121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78071.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 2066543121 is about 45459.2468151420. The cubic root of 2066543121 is about 1273.7420623418.

Adding to 2066543121 its reverse (1213456602), we get a palindrome (3279999723).

The spelling of 2066543121 in words is "two billion, sixty-six million, five hundred forty-three thousand, one hundred twenty-one".