2142243364566 has 16 divisors (see below), whose sum is σ = 4299954193584. Its totient is φ = 711503210784.

The previous prime is 2142243364559. The next prime is 2142243364589. The reversal of 2142243364566 is 6654633422412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 644475885 + ... + 644479208.

It is an arithmetic number, because the mean of its divisors is an integer number (268747137099).

Almost surely, 2^{2142243364566} is an apocalyptic number.

2142243364566 is an abundant number, since it is smaller than the sum of its proper divisors (2157710829018).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2142243364566 is a wasteful number, since it uses less digits than its factorization.

2142243364566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1288955375.

The product of its digits is 4976640, while the sum is 48.

Adding to 2142243364566 its reverse (6654633422412), we get a palindrome (8796876786978).

The spelling of 2142243364566 in words is "two trillion, one hundred forty-two billion, two hundred forty-three million, three hundred sixty-four thousand, five hundred sixty-six".