20666200201611 has 8 divisors (see below), whose sum is σ = 28505103726480. Its totient is φ = 13302381738912.

The previous prime is 20666200201609. The next prime is 20666200201639. The reversal of 20666200201611 is 11610200266602.

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

It is not a de Polignac number, because 20666200201611 - 2¹ = 20666200201609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20666200203611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118771265440 + ... + 118771265613.

It is an arithmetic number, because the mean of its divisors is an integer number (3563137965810).

Almost surely, 2^{20666200201611} is an apocalyptic number.

20666200201611 is a deficient number, since it is larger than the sum of its proper divisors (7838903524869).

20666200201611 is a wasteful number, since it uses less digits than its factorization.

20666200201611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237542531085.

The product of its (nonzero) digits is 10368, while the sum is 33.

The spelling of 20666200201611 in words is "twenty trillion, six hundred sixty-six billion, two hundred million, two hundred one thousand, six hundred eleven".