20385143926 has 32 divisors (see below), whose sum is σ = 35552597760. Its totient is φ = 8584951200.

The previous prime is 20385143923. The next prime is 20385143983. The reversal of 20385143926 is 62934158302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20385143923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3872136 + ... + 3877396.

It is an arithmetic number, because the mean of its divisors is an integer number (1111018680).

Almost surely, 2^20385143926 is an apocalyptic number.

20385143926 is a deficient number, since it is larger than the sum of its proper divisors (15167453834).

20385143926 is a wasteful number, since it uses less digits than its factorization.

20385143926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10020.

The product of its (nonzero) digits is 311040, while the sum is 43.

The spelling of 20385143926 in words is "twenty billion, three hundred eighty-five million, one hundred forty-three thousand, nine hundred twenty-six".