111144505445 has 16 divisors (see below), whose sum is σ = 141241235760. Its totient is φ = 83672039424.

The previous prime is 111144505429. The next prime is 111144505457. The reversal of 111144505445 is 544505441111.

It can be written as a sum of positive squares in 8 ways, for example, as 9428798404 + 101715707041 = 97102^2 + 318929^2 .

It is not a de Polignac number, because 111144505445 - 2⁴ = 111144505429 is a prime.

It is a super-2 number, since 2×111144505445² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 454829 + ... + 655101.

It is an arithmetic number, because the mean of its divisors is an integer number (8827577235).

Almost surely, 2^111144505445 is an apocalyptic number.

It is an amenable number.

111144505445 is a deficient number, since it is larger than the sum of its proper divisors (30096730315).

111144505445 is a wasteful number, since it uses less digits than its factorization.

111144505445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206824.

The product of its (nonzero) digits is 32000, while the sum is 35.

Adding to 111144505445 its reverse (544505441111), we get a palindrome (655649946556).

The spelling of 111144505445 in words is "one hundred eleven billion, one hundred forty-four million, five hundred five thousand, four hundred forty-five".