2066405441 has 4 divisors (see below), whose sum is σ = 2074638384. Its totient is φ = 2058172500.

The previous prime is 2066405413. The next prime is 2066405461. The reversal of 2066405441 is 1445046602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2066405441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2066405398 and 2066405407.

It is not an unprimeable number, because it can be changed into a prime (2066405461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4116095 + ... + 4116596.

It is an arithmetic number, because the mean of its divisors is an integer number (518659596).

Almost surely, 2^2066405441 is an apocalyptic number.

It is an amenable number.

2066405441 is a deficient number, since it is larger than the sum of its proper divisors (8232943).

2066405441 is an equidigital number, since it uses as much as digits as its factorization.

2066405441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8232942.

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 2066405441 is about 45457.7324665452. The cubic root of 2066405441 is about 1273.7137747311.

The spelling of 2066405441 in words is "two billion, sixty-six million, four hundred five thousand, four hundred forty-one".