20333366666791 has 8 divisors (see below), whose sum is σ = 21403651493120. Its totient is φ = 19263092603832.

The previous prime is 20333366666633. The next prime is 20333366666797. The reversal of 20333366666791 is 19766666333302.

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

It is a cyclic number.

It is not a de Polignac number, because 20333366666791 - 2¹⁷ = 20333366535719 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 (20333366666797) 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, 1341826 + ... + 6516688.

It is an arithmetic number, because the mean of its divisors is an integer number (2675456436640).

Almost surely, 2^{20333366666791} is an apocalyptic number.

20333366666791 is a deficient number, since it is larger than the sum of its proper divisors (1070284826329).

20333366666791 is a wasteful number, since it uses less digits than its factorization.

20333366666791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5381685.

The product of its (nonzero) digits is 79361856, while the sum is 61.

The spelling of 20333366666791 in words is "twenty trillion, three hundred thirty-three billion, three hundred sixty-six million, six hundred sixty-six thousand, seven hundred ninety-one".