2105351143550 has 24 divisors (see below), whose sum is σ = 3917447439192. Its totient is φ = 841819100000.

The previous prime is 2105351143529. The next prime is 2105351143559. The reversal of 2105351143550 is 553411535012.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2105351143550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105351143559) 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 11 ways as a sum of consecutive naturals, for example, 7901576 + ... + 8163675.

It is an arithmetic number, because the mean of its divisors is an integer number (163226976633).

Almost surely, 2^{2105351143550} is an apocalyptic number.

2105351143550 is a deficient number, since it is larger than the sum of its proper divisors (1812096295642).

2105351143550 is a wasteful number, since it uses less digits than its factorization.

2105351143550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16067884 (or 16067879 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 35.

Adding to 2105351143550 its reverse (553411535012), we get a palindrome (2658762678562).

The spelling of 2105351143550 in words is "two trillion, one hundred five billion, three hundred fifty-one million, one hundred forty-three thousand, five hundred fifty".