2054143221605 has 16 divisors (see below), whose sum is σ = 2471982142080. Its totient is φ = 1638642495168.

The previous prime is 2054143221589. The next prime is 2054143221629. The reversal of 2054143221605 is 5061223414502.

It is a cyclic number.

It is not a de Polignac number, because 2054143221605 - 2⁴ = 2054143221589 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11810504 + ... + 11983166.

It is an arithmetic number, because the mean of its divisors is an integer number (154498883880).

Almost surely, 2^{2054143221605} is an apocalyptic number.

It is an amenable number.

2054143221605 is a deficient number, since it is larger than the sum of its proper divisors (417838920475).

2054143221605 is a wasteful number, since it uses less digits than its factorization.

2054143221605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179420.

The product of its (nonzero) digits is 57600, while the sum is 35.

The spelling of 2054143221605 in words is "two trillion, fifty-four billion, one hundred forty-three million, two hundred twenty-one thousand, six hundred five".