11128670656 has 112 divisors (see below), whose sum is σ = 23783178240. Its totient is φ = 5154831360.

The previous prime is 11128670629. The next prime is 11128670699. The reversal of 11128670656 is 65607682111.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7306311 + ... + 7307833.

Almost surely, 2^11128670656 is an apocalyptic number.

11128670656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11128670656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11891589120).

11128670656 is an abundant number, since it is smaller than the sum of its proper divisors (12654507584).

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

11128670656 is a wasteful number, since it uses less digits than its factorization.

11128670656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1722 (or 1712 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 43.

It can be divided in two parts, 1112 and 8670656, that added together give a palindrome (8671768).

The spelling of 11128670656 in words is "eleven billion, one hundred twenty-eight million, six hundred seventy thousand, six hundred fifty-six".