20103888565944 has 96 divisors (see below), whose sum is σ = 55347959066400. Its totient is φ = 6590565008640.

The previous prime is 20103888565913. The next prime is 20103888565961. The reversal of 20103888565944 is 44956588830102.

20103888565944 is a `hidden beast` number, since 2 + 0 + 1 + 0 + 38 + 8 + 8 + 5 + 6 + 594 + 4 = 666.

It is a super-2 number, since 2×20103888565944² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33250882 + ... + 33850094.

It is an arithmetic number, because the mean of its divisors is an integer number (576541240275).

Almost surely, 2^{20103888565944} is an apocalyptic number.

20103888565944 is a gapful number since it is divisible by the number (24) 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 20103888565944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27673979533200).

20103888565944 is an abundant number, since it is smaller than the sum of its proper divisors (35244070500456).

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

20103888565944 is a wasteful number, since it uses less digits than its factorization.

20103888565944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606925 (or 606918 counting only the distinct ones).

The product of its (nonzero) digits is 66355200, while the sum is 63.

The spelling of 20103888565944 in words is "twenty trillion, one hundred three billion, eight hundred eighty-eight million, five hundred sixty-five thousand, nine hundred forty-four".