20321111418 has 16 divisors (see below), whose sum is σ = 41061216000. Its totient is φ = 6703871616.

The previous prime is 20321111417. The next prime is 20321111453. The reversal of 20321111418 is 81411112302.

It is not an unprimeable number, because it can be changed into a prime (20321111417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17457418 + ... + 17458581.

It is an arithmetic number, because the mean of its divisors is an integer number (2566326000).

Almost surely, 2^20321111418 is an apocalyptic number.

20321111418 is an abundant number, since it is smaller than the sum of its proper divisors (20740104582).

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

20321111418 is a wasteful number, since it uses less digits than its factorization.

20321111418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34916101.

The product of its (nonzero) digits is 384, while the sum is 24.

The spelling of 20321111418 in words is "twenty billion, three hundred twenty-one million, one hundred eleven thousand, four hundred eighteen".