1123430435545 has 16 divisors (see below), whose sum is σ = 1472695555968. Its totient is φ = 815916435840.

The previous prime is 1123430435537. The next prime is 1123430435549. The reversal of 1123430435545 is 5455340343211.

It is not a de Polignac number, because 1123430435545 - 2³ = 1123430435537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1123430435498 and 1123430435507.

It is not an unprimeable number, because it can be changed into a prime (1123430435549) 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 15 ways as a sum of consecutive naturals, for example, 14008164 + ... + 14088133.

It is an arithmetic number, because the mean of its divisors is an integer number (92043472248).

Almost surely, 2^{1123430435545} is an apocalyptic number.

It is an amenable number.

1123430435545 is a deficient number, since it is larger than the sum of its proper divisors (349265120423).

1123430435545 is a wasteful number, since it uses less digits than its factorization.

1123430435545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28097040.

The product of its (nonzero) digits is 432000, while the sum is 40.

Adding to 1123430435545 its reverse (5455340343211), we get a palindrome (6578770778756).

The spelling of 1123430435545 in words is "one trillion, one hundred twenty-three billion, four hundred thirty million, four hundred thirty-five thousand, five hundred forty-five".