1155044572243 has 4 divisors (see below), whose sum is σ = 1155156386328. Its totient is φ = 1154932758160.

The previous prime is 1155044572207. The next prime is 1155044572247. The reversal of 1155044572243 is 3422754405511.

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

It is a cyclic number.

It is not a de Polignac number, because 1155044572243 - 2¹⁷ = 1155044441171 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 1155044572243.

It is not an unprimeable number, because it can be changed into a prime (1155044572247) 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, 55891546 + ... + 55912207.

It is an arithmetic number, because the mean of its divisors is an integer number (288789096582).

Almost surely, 2^{1155044572243} is an apocalyptic number.

1155044572243 is a deficient number, since it is larger than the sum of its proper divisors (111814085).

1155044572243 is a wasteful number, since it uses less digits than its factorization.

1155044572243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111814084.

The product of its (nonzero) digits is 672000, while the sum is 43.

Adding to 1155044572243 its reverse (3422754405511), we get a palindrome (4577798977754).

The spelling of 1155044572243 in words is "one trillion, one hundred fifty-five billion, forty-four million, five hundred seventy-two thousand, two hundred forty-three".