20313163330440 has 256 divisors, whose sum is σ = 63138184611840. Its totient is φ = 5222734848000.

The previous prime is 20313163330423. The next prime is 20313163330477. The reversal of 20313163330440 is 4403336131302.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1120964580 + ... + 1120982700.

It is an arithmetic number, because the mean of its divisors is an integer number (246633533640).

Almost surely, 2^{20313163330440} is an apocalyptic number.

20313163330440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20313163330440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31569092305920).

20313163330440 is an abundant number, since it is smaller than the sum of its proper divisors (42825021281400).

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

20313163330440 is a wasteful number, since it uses less digits than its factorization.

20313163330440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19264 (or 19260 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 33.

Adding to 20313163330440 its reverse (4403336131302), we get a palindrome (24716499461742).

The spelling of 20313163330440 in words is "twenty trillion, three hundred thirteen billion, one hundred sixty-three million, three hundred thirty thousand, four hundred forty".