2145143202305 has 16 divisors (see below), whose sum is σ = 2616457577664. Its totient is φ = 1687925926080.

The previous prime is 2145143202289. The next prime is 2145143202329. The reversal of 2145143202305 is 5032023415412.

It is not a de Polignac number, because 2145143202305 - 2⁴ = 2145143202289 is a prime.

It is a Duffinian 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, 10858622 + ... + 11054408.

It is an arithmetic number, because the mean of its divisors is an integer number (163528598604).

Almost surely, 2^{2145143202305} is an apocalyptic number.

It is an amenable number.

2145143202305 is a deficient number, since it is larger than the sum of its proper divisors (471314375359).

2145143202305 is a wasteful number, since it uses less digits than its factorization.

2145143202305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231776.

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 2145143202305 its reverse (5032023415412), we get a palindrome (7177166617717).

The spelling of 2145143202305 in words is "two trillion, one hundred forty-five billion, one hundred forty-three million, two hundred two thousand, three hundred five".