1145755615566 has 16 divisors (see below), whose sum is σ = 2291524110288. Its totient is φ = 381916392000.

The previous prime is 1145755615531. The next prime is 1145755615579. The reversal of 1145755615566 is 6655165575411.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 926916 + ... + 1775016.

It is an arithmetic number, because the mean of its divisors is an integer number (143220256893).

Almost surely, 2^{1145755615566} is an apocalyptic number.

1145755615566 is an abundant number, since it is smaller than the sum of its proper divisors (1145768494722).

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

1145755615566 is a wasteful number, since it uses less digits than its factorization.

1145755615566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1073267.

The product of its digits is 18900000, while the sum is 57.

The spelling of 1145755615566 in words is "one trillion, one hundred forty-five billion, seven hundred fifty-five million, six hundred fifteen thousand, five hundred sixty-six".