20103140023040 has 144 divisors (see below), whose sum is σ = 49900071271680. Its totient is φ = 7751577108480.

The previous prime is 20103140023033. The next prime is 20103140023067. The reversal of 20103140023040 is 4032004130102.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9212096 + ... + 11183424.

It is an arithmetic number, because the mean of its divisors is an integer number (346528272720).

Almost surely, 2^{20103140023040} is an apocalyptic number.

20103140023040 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 20103140023040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24950035635840).

20103140023040 is an abundant number, since it is smaller than the sum of its proper divisors (29796931248640).

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

20103140023040 is a wasteful number, since it uses less digits than its factorization.

20103140023040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1971638 (or 1971624 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 20103140023040 its reverse (4032004130102), we get a palindrome (24135144153142).

The spelling of 20103140023040 in words is "twenty trillion, one hundred three billion, one hundred forty million, twenty-three thousand, forty".