20312010044040 has 256 divisors, whose sum is σ = 74701756846080. Its totient is φ = 4347721128960.

The previous prime is 20312010044033. The next prime is 20312010044041. The reversal of 20312010044040 is 4044001021302.

It is a junction number, because it is equal to n+sod(n) for n = 20312010043998 and 20312010044016.

It is not an unprimeable number, because it can be changed into a prime (20312010044041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 25337572 + ... + 26126931.

It is an arithmetic number, because the mean of its divisors is an integer number (291803737680).

Almost surely, 2^{20312010044040} is an apocalyptic number.

20312010044040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20312010044040 is an abundant number, since it is smaller than the sum of its proper divisors (54389746802040).

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

20312010044040 is a wasteful number, since it uses less digits than its factorization.

20312010044040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51464564 (or 51464560 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 20312010044040 its reverse (4044001021302), we get a palindrome (24356011065342).

The spelling of 20312010044040 in words is "twenty trillion, three hundred twelve billion, ten million, forty-four thousand, forty".