11104123545 has 120 divisors (see below), whose sum is σ = 21419262216. Its totient is φ = 5500804608.

The previous prime is 11104123493. The next prime is 11104123549. The reversal of 11104123545 is 54532140111.

11104123545 is a `hidden beast` number, since 1 + 1 + 104 + 12 + 3 + 545 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 3705887376 + 7398236169 = 60876^2 + 86013^2 .

It is not a de Polignac number, because 11104123545 - 2³⁰ = 10030381721 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (11104123549) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 7748149 + ... + 7749581.

Almost surely, 2^11104123545 is an apocalyptic number.

11104123545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11104123545 is a deficient number, since it is larger than the sum of its proper divisors (10315138671).

11104123545 is a wasteful number, since it uses less digits than its factorization.

11104123545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1541 (or 1513 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

Adding to 11104123545 its reverse (54532140111), we get a palindrome (65636263656).

The spelling of 11104123545 in words is "eleven billion, one hundred four million, one hundred twenty-three thousand, five hundred forty-five".