20986313650309 has 8 divisors (see below), whose sum is σ = 24035716830528. Its totient is φ = 17949750063360.

The previous prime is 20986313650307. The next prime is 20986313650327. The reversal of 20986313650309 is 90305631368902.

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 20986313650309 - 2¹ = 20986313650307 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20986313650309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20986313650307) 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 7 ways as a sum of consecutive naturals, for example, 3209894812 + ... + 3209901349.

It is an arithmetic number, because the mean of its divisors is an integer number (3004464603816).

Almost surely, 2^{20986313650309} is an apocalyptic number.

It is an amenable number.

20986313650309 is a deficient number, since it is larger than the sum of its proper divisors (3049403180219).

20986313650309 is an equidigital number, since it uses as much as digits as its factorization.

20986313650309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6419796635.

The product of its (nonzero) digits is 6298560, while the sum is 55.

The spelling of 20986313650309 in words is "twenty trillion, nine hundred eighty-six billion, three hundred thirteen million, six hundred fifty thousand, three hundred nine".