2145205134143 has 16 divisors (see below), whose sum is σ = 2317076520960. Its totient is φ = 1980757237536.

The previous prime is 2145205134131. The next prime is 2145205134169. The reversal of 2145205134143 is 3414315025412.

It is a cyclic number.

It is not a de Polignac number, because 2145205134143 - 2²⁶ = 2145138025279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145205131143) by changing a digit.

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, 9816353 + ... + 10032506.

It is an arithmetic number, because the mean of its divisors is an integer number (144817282560).

Almost surely, 2^{2145205134143} is an apocalyptic number.

2145205134143 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2145205134143 is a deficient number, since it is larger than the sum of its proper divisors (171871386817).

2145205134143 is a wasteful number, since it uses less digits than its factorization.

2145205134143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19849046.

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

The spelling of 2145205134143 in words is "two trillion, one hundred forty-five billion, two hundred five million, one hundred thirty-four thousand, one hundred forty-three".