20318363121 has 8 divisors (see below), whose sum is σ = 30961315264. Its totient is φ = 11610493200.

The previous prime is 20318363111. The next prime is 20318363129. The reversal of 20318363121 is 12136381302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20318363121 - 2¹³ = 20318354929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20318363129) 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 7 ways as a sum of consecutive naturals, for example, 483770530 + ... + 483770571.

It is an arithmetic number, because the mean of its divisors is an integer number (3870164408).

Almost surely, 2^20318363121 is an apocalyptic number.

20318363121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20318363121 is a deficient number, since it is larger than the sum of its proper divisors (10642952143).

20318363121 is an equidigital number, since it uses as much as digits as its factorization.

20318363121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 967541111.

The product of its (nonzero) digits is 5184, while the sum is 30.

The spelling of 20318363121 in words is "twenty billion, three hundred eighteen million, three hundred sixty-three thousand, one hundred twenty-one".