20838745327 has 4 divisors (see below), whose sum is σ = 20883368376. Its totient is φ = 20794122280.

The previous prime is 20838745297. The next prime is 20838745351. The reversal of 20838745327 is 72354783802.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20838745327 - 2¹⁹ = 20838221039 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20838745127) 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 3 ways as a sum of consecutive naturals, for example, 22310824 + ... + 22311757.

It is an arithmetic number, because the mean of its divisors is an integer number (5220842094).

Almost surely, 2^20838745327 is an apocalyptic number.

20838745327 is a deficient number, since it is larger than the sum of its proper divisors (44623049).

20838745327 is an equidigital number, since it uses as much as digits as its factorization.

20838745327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44623048.

The product of its (nonzero) digits is 2257920, while the sum is 49.

The spelling of 20838745327 in words is "twenty billion, eight hundred thirty-eight million, seven hundred forty-five thousand, three hundred twenty-seven".