11091428646 has 8 divisors (see below), whose sum is σ = 22182857304. Its totient is φ = 3697142880.

The previous prime is 11091428641. The next prime is 11091428659. The reversal of 11091428646 is 64682419011.

It is a sphenic number, since it is the product of 3 distinct primes.

11091428646 is an admirable number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11091428598 and 11091428607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11091428641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 924285715 + ... + 924285726.

It is an arithmetic number, because the mean of its divisors is an integer number (2772857163).

Almost surely, 2^11091428646 is an apocalyptic number.

11091428646 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

11091428646 is a wasteful number, since it uses less digits than its factorization.

11091428646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1848571446.

The product of its (nonzero) digits is 82944, while the sum is 42.

The spelling of 11091428646 in words is "eleven billion, ninety-one million, four hundred twenty-eight thousand, six hundred forty-six".