20351633366645 has 8 divisors (see below), whose sum is σ = 27910811474304. Its totient is φ = 13955405737104.

The previous prime is 20351633366641. The next prime is 20351633366663. The reversal of 20351633366645 is 54666333615302.

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 20351633366645 - 2² = 20351633366641 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 (20351633366641) 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, 290737619489 + ... + 290737619558.

It is an arithmetic number, because the mean of its divisors is an integer number (3488851434288).

Almost surely, 2^{20351633366645} is an apocalyptic number.

It is an amenable number.

20351633366645 is a deficient number, since it is larger than the sum of its proper divisors (7559178107659).

20351633366645 is an equidigital number, since it uses as much as digits as its factorization.

20351633366645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581475239059.

The product of its (nonzero) digits is 20995200, while the sum is 53.

The spelling of 20351633366645 in words is "twenty trillion, three hundred fifty-one billion, six hundred thirty-three million, three hundred sixty-six thousand, six hundred forty-five".