20786385605759 has 8 divisors (see below), whose sum is σ = 21269879600640. Its totient is φ = 20302895687256.

The previous prime is 20786385605753. The next prime is 20786385605837. The reversal of 20786385605759 is 95750658368702.

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 20786385605759 - 2⁴ = 20786385605743 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20786385605692 and 20786385605701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20786385605753) 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, 10900754 + ... + 12664880.

It is an arithmetic number, because the mean of its divisors is an integer number (2658734950080).

Almost surely, 2^{20786385605759} is an apocalyptic number.

20786385605759 is a deficient number, since it is larger than the sum of its proper divisors (483493994881).

20786385605759 is a wasteful number, since it uses less digits than its factorization.

20786385605759 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2038189.

The product of its (nonzero) digits is 762048000, while the sum is 71.

The spelling of 20786385605759 in words is "twenty trillion, seven hundred eighty-six billion, three hundred eighty-five million, six hundred five thousand, seven hundred fifty-nine".