20385684327 has 4 divisors (see below), whose sum is σ = 27180912440. Its totient is φ = 13590456216.

The previous prime is 20385684287. The next prime is 20385684329. The reversal of 20385684327 is 72348658302.

It is a happy number.

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

It is not a de Polignac number, because 20385684327 - 2¹⁶ = 20385618791 is a prime.

It is a super-2 number, since 2×20385684327² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20385684329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3397614052 + ... + 3397614057.

It is an arithmetic number, because the mean of its divisors is an integer number (6795228110).

Almost surely, 2^20385684327 is an apocalyptic number.

20385684327 is a deficient number, since it is larger than the sum of its proper divisors (6795228113).

20385684327 is an equidigital number, since it uses as much as digits as its factorization.

20385684327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6795228112.

The product of its (nonzero) digits is 1935360, while the sum is 48.

The spelling of 20385684327 in words is "twenty billion, three hundred eighty-five million, six hundred eighty-four thousand, three hundred twenty-seven".