1123044135553 has 4 divisors (see below), whose sum is σ = 1124471130160. Its totient is φ = 1121617140948.

The previous prime is 1123044135527. The next prime is 1123044135667. The reversal of 1123044135553 is 3555314403211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1123044135553 is a prime.

It is a super-2 number, since 2×1123044135553² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123044235553) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 713496123 + ... + 713497696.

It is an arithmetic number, because the mean of its divisors is an integer number (281117782540).

Almost surely, 2^{1123044135553} is an apocalyptic number.

It is an amenable number.

1123044135553 is a deficient number, since it is larger than the sum of its proper divisors (1426994607).

1123044135553 is an equidigital number, since it uses as much as digits as its factorization.

1123044135553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1426994606.

The product of its (nonzero) digits is 108000, while the sum is 37.

Adding to 1123044135553 its reverse (3555314403211), we get a palindrome (4678358538764).

The spelling of 1123044135553 in words is "one trillion, one hundred twenty-three billion, forty-four million, one hundred thirty-five thousand, five hundred fifty-three".