11112233345678 has 16 divisors (see below), whose sum is σ = 16880472732816. Its totient is φ = 5485498777920.

The previous prime is 11112233345677. The next prime is 11112233345711. The reversal of 11112233345678 is 87654333221111.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11112233345677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22170503 + ... + 22666178.

It is an arithmetic number, because the mean of its divisors is an integer number (1055029545801).

Almost surely, 2^{11112233345678} is an apocalyptic number.

11112233345678 is a deficient number, since it is larger than the sum of its proper divisors (5768239387138).

11112233345678 is a wasteful number, since it uses less digits than its factorization.

11112233345678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44838259.

The product of its digits is 725760, while the sum is 47.

Adding to 11112233345678 its reverse (87654333221111), we get a palindrome (98766566566789).

The spelling of 11112233345678 in words is "eleven trillion, one hundred twelve billion, two hundred thirty-three million, three hundred forty-five thousand, six hundred seventy-eight".