1143566311253 has 4 divisors (see below), whose sum is σ = 1156415371020. Its totient is φ = 1130717251488.

The previous prime is 1143566311243. The next prime is 1143566311313. The reversal of 1143566311253 is 3521136653411.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 573591140164 + 569975171089 = 757358^2 + 754967^2 .

It is a cyclic number.

It is not a de Polignac number, because 1143566311253 - 2¹² = 1143566307157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1143566311253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143566311243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6424529750 + ... + 6424529927.

It is an arithmetic number, because the mean of its divisors is an integer number (289103842755).

Almost surely, 2^{1143566311253} is an apocalyptic number.

It is an amenable number.

1143566311253 is a deficient number, since it is larger than the sum of its proper divisors (12849059767).

1143566311253 is an equidigital number, since it uses as much as digits as its factorization.

1143566311253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12849059766.

The product of its digits is 194400, while the sum is 41.

The spelling of 1143566311253 in words is "one trillion, one hundred forty-three billion, five hundred sixty-six million, three hundred eleven thousand, two hundred fifty-three".