2105408788845 has 16 divisors (see below), whose sum is σ = 3368737115520. Its totient is φ = 1122857002944.

The previous prime is 2105408788789. The next prime is 2105408788907. The reversal of 2105408788845 is 5488878045012.

It is a happy number.

It is not a de Polignac number, because 2105408788845 - 2¹³ = 2105408780653 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1094050 + ... + 2325459.

It is an arithmetic number, because the mean of its divisors is an integer number (210546069720).

Almost surely, 2^{2105408788845} is an apocalyptic number.

It is an amenable number.

2105408788845 is a deficient number, since it is larger than the sum of its proper divisors (1263328326675).

2105408788845 is a wasteful number, since it uses less digits than its factorization.

2105408788845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3460564.

The product of its (nonzero) digits is 22937600, while the sum is 60.

The spelling of 2105408788845 in words is "two trillion, one hundred five billion, four hundred eight million, seven hundred eighty-eight thousand, eight hundred forty-five".