20051403103105 has 32 divisors (see below), whose sum is σ = 26504868918528. Its totient is φ = 14440759833600.

The previous prime is 20051403103103. The next prime is 20051403103159. The reversal of 20051403103105 is 50130130415002.

It is a happy number.

It is not a de Polignac number, because 20051403103105 - 2¹ = 20051403103103 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20051403103105.

It is not an unprimeable number, because it can be changed into a prime (20051403103103) 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 31 ways as a sum of consecutive naturals, for example, 269033245 + ... + 269107765.

It is an arithmetic number, because the mean of its divisors is an integer number (828277153704).

Almost surely, 2^{20051403103105} is an apocalyptic number.

It is an amenable number.

20051403103105 is a deficient number, since it is larger than the sum of its proper divisors (6453465815423).

20051403103105 is a wasteful number, since it uses less digits than its factorization.

20051403103105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122137.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 20051403103105 its reverse (50130130415002), we get a palindrome (70181533518107).

The spelling of 20051403103105 in words is "twenty trillion, fifty-one billion, four hundred three million, one hundred three thousand, one hundred five".