20321067318 has 32 divisors (see below), whose sum is σ = 42425510400. Its totient is φ = 6476686656.

The previous prime is 20321067293. The next prime is 20321067413. The reversal of 20321067318 is 81376012302.

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 15 ways as a sum of consecutive naturals, for example, 349623 + ... + 403581.

It is an arithmetic number, because the mean of its divisors is an integer number (1325797200).

Almost surely, 2^20321067318 is an apocalyptic number.

20321067318 is an abundant number, since it is smaller than the sum of its proper divisors (22104443082).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20321067318 is a wasteful number, since it uses less digits than its factorization.

20321067318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56716.

The product of its (nonzero) digits is 12096, while the sum is 33.

The spelling of 20321067318 in words is "twenty billion, three hundred twenty-one million, sixty-seven thousand, three hundred eighteen".