2666682454785 has 16 divisors (see below), whose sum is σ = 4266752029056. Its totient is φ = 1422210608768.

The previous prime is 2666682454783. The next prime is 2666682454817. The reversal of 2666682454785 is 5874542866662.

It is a cyclic number.

It is not a de Polignac number, because 2666682454785 - 2¹ = 2666682454783 is a prime.

It is a super-2 number, since 2×2666682454785² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2666682454783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118644 + ... + 2312453.

It is an arithmetic number, because the mean of its divisors is an integer number (266672001816).

Almost surely, 2^{2666682454785} is an apocalyptic number.

It is an amenable number.

2666682454785 is a deficient number, since it is larger than the sum of its proper divisors (1600069574271).

2666682454785 is a wasteful number, since it uses less digits than its factorization.

2666682454785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2504232.

The product of its digits is 928972800, while the sum is 69.

The spelling of 2666682454785 in words is "two trillion, six hundred sixty-six billion, six hundred eighty-two million, four hundred fifty-four thousand, seven hundred eighty-five".