20838321116 has 18 divisors (see below), whose sum is σ = 37479305808. Its totient is φ = 10137558960.

The previous prime is 20838321107. The next prime is 20838321131. The reversal of 20838321116 is 61112383802.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 1897220 + ... + 1908171.

It is an arithmetic number, because the mean of its divisors is an integer number (2082183656).

Almost surely, 2^20838321116 is an apocalyptic number.

It is an amenable number.

20838321116 is a deficient number, since it is larger than the sum of its proper divisors (16640984692).

20838321116 is a wasteful number, since it uses less digits than its factorization.

20838321116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3805469 (or 3805430 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The spelling of 20838321116 in words is "twenty billion, eight hundred thirty-eight million, three hundred twenty-one thousand, one hundred sixteen".