2066266066646 has 8 divisors (see below), whose sum is σ = 3112367297760. Its totient is φ = 1028810300728.

The previous prime is 2066266066583. The next prime is 2066266066649. The reversal of 2066266066646 is 6466606626602.

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

It is a super-2 number, since 2×2066266066646² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2066266066591 and 2066266066600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2066266066649) 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, 2161365701 + ... + 2161366656.

It is an arithmetic number, because the mean of its divisors is an integer number (389045912220).

Almost surely, 2^{2066266066646} is an apocalyptic number.

2066266066646 is a deficient number, since it is larger than the sum of its proper divisors (1046101231114).

2066266066646 is a wasteful number, since it uses less digits than its factorization.

2066266066646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4322732598.

The product of its (nonzero) digits is 26873856, while the sum is 56.

The spelling of 2066266066646 in words is "two trillion, sixty-six billion, two hundred sixty-six million, sixty-six thousand, six hundred forty-six".