2066782235787 has 12 divisors (see below), whose sum is σ = 3023141386720. Its totient is φ = 1360413623088.

The previous prime is 2066782235767. The next prime is 2066782235789. The reversal of 2066782235787 is 7875322876602.

2066782235787 is a `hidden beast` number, since 206 + 6 + 78 + 2 + 2 + 357 + 8 + 7 = 666.

It is not a de Polignac number, because 2066782235787 - 2¹⁰ = 2066782234763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2066782235789) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1453432648 + ... + 1453434069.

Almost surely, 2^{2066782235787} is an apocalyptic number.

2066782235787 is a deficient number, since it is larger than the sum of its proper divisors (956359150933).

2066782235787 is a wasteful number, since it uses less digits than its factorization.

2066782235787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2906866802 (or 2906866799 counting only the distinct ones).

The product of its (nonzero) digits is 94832640, while the sum is 63.

The spelling of 2066782235787 in words is "two trillion, sixty-six billion, seven hundred eighty-two million, two hundred thirty-five thousand, seven hundred eighty-seven".