20385339136 has 36 divisors (see below), whose sum is σ = 40719137200. Its totient is φ = 10185633792.

The previous prime is 20385339109. The next prime is 20385339137. The reversal of 20385339136 is 63193358302.

It is a junction number, because it is equal to n+sod(n) for n = 20385339092 and 20385339101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20385339137) 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, 354445 + ... + 407923.

Almost surely, 2^20385339136 is an apocalyptic number.

It is an amenable number.

20385339136 is a deficient number, since it is larger than the sum of its proper divisors (20333798064).

20385339136 is an equidigital number, since it uses as much as digits as its factorization.

20385339136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54984 (or 54970 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 43.

The spelling of 20385339136 in words is "twenty billion, three hundred eighty-five million, three hundred thirty-nine thousand, one hundred thirty-six".