11112233456 has 40 divisors (see below), whose sum is σ = 22281669120. Its totient is φ = 5362285824.

The previous prime is 11112233387. The next prime is 11112233471. The reversal of 11112233456 is 65433221111.

It is a Harshad number since it is a multiple of its sum of digits (29).

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 7 ways as a sum of consecutive naturals, for example, 1837670 + ... + 1843706.

It is an arithmetic number, because the mean of its divisors is an integer number (557041728).

Almost surely, 2^11112233456 is an apocalyptic number.

11112233456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11112233456 is an abundant number, since it is smaller than the sum of its proper divisors (11169435664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11112233456 is a wasteful number, since it uses less digits than its factorization.

11112233456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10041 (or 10035 counting only the distinct ones).

The product of its digits is 4320, while the sum is 29.

Adding to 11112233456 its reverse (65433221111), we get a palindrome (76545454567).

The spelling of 11112233456 in words is "eleven billion, one hundred twelve million, two hundred thirty-three thousand, four hundred fifty-six".