1123041511553 has 8 divisors (see below), whose sum is σ = 1214135274408. Its totient is φ = 1032620027904.

The previous prime is 1123041511549. The next prime is 1123041511567. The reversal of 1123041511553 is 3551151403211.

It can be written as a sum of positive squares in 4 ways, for example, as 215028818944 + 908012692609 = 463712^2 + 952897^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1123041511553 - 2² = 1123041511549 is a prime.

It is a super-2 number, since 2×1123041511553² (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 (1123041511853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168066326 + ... + 168073007.

It is an arithmetic number, because the mean of its divisors is an integer number (151766909301).

Almost surely, 2^{1123041511553} is an apocalyptic number.

1123041511553 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1123041511553 is a deficient number, since it is larger than the sum of its proper divisors (91093762855).

1123041511553 is a wasteful number, since it uses less digits than its factorization.

1123041511553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336139603.

The product of its (nonzero) digits is 9000, while the sum is 32.

Adding to 1123041511553 its reverse (3551151403211), we get a palindrome (4674192914764).

The spelling of 1123041511553 in words is "one trillion, one hundred twenty-three billion, forty-one million, five hundred eleven thousand, five hundred fifty-three".