1123344445678 has 128 divisors (see below), whose sum is σ = 2167754819328. Its totient is φ = 424774139904.

The previous prime is 1123344445667. The next prime is 1123344445681. The reversal of 1123344445678 is 8765444433211.

It is a happy number.

It is a super-2 number, since 2×1123344445678² (a number of 25 digits) contains 22 as substring.

It is a plaindrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 89481850 + ... + 89494402.

It is an arithmetic number, because the mean of its divisors is an integer number (16935584526).

Almost surely, 2^{1123344445678} is an apocalyptic number.

1123344445678 is a deficient number, since it is larger than the sum of its proper divisors (1044410373650).

1123344445678 is a wasteful number, since it uses less digits than its factorization.

1123344445678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12846.

The product of its digits is 7741440, while the sum is 52.

Adding to 1123344445678 its reverse (8765444433211), we get a palindrome (9888788878889).

The spelling of 1123344445678 in words is "one trillion, one hundred twenty-three billion, three hundred forty-four million, four hundred forty-five thousand, six hundred seventy-eight".