2066012509 has 8 divisors (see below), whose sum is σ = 2308803840. Its totient is φ = 1832383200.

The previous prime is 2066012489. The next prime is 2066012539. The reversal of 2066012509 is 9052106602.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2066012509 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 (2066012539) 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, 2290029 + ... + 2290930.

It is an arithmetic number, because the mean of its divisors is an integer number (288600480).

Almost surely, 2^2066012509 is an apocalyptic number.

It is an amenable number.

2066012509 is a deficient number, since it is larger than the sum of its proper divisors (242791331).

2066012509 is a wasteful number, since it uses less digits than its factorization.

2066012509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4581011.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 2066012509 is about 45453.4103120987. The cubic root of 2066012509 is about 1273.6330363602.

The spelling of 2066012509 in words is "two billion, sixty-six million, twelve thousand, five hundred nine".