11091578044 has 12 divisors (see below), whose sum is σ = 19435773168. Its totient is φ = 5538500000.

The previous prime is 11091577993. The next prime is 11091578051. The reversal of 11091578044 is 44087519011.

It is a super-2 number, since 2×11091578044² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11091577988 and 11091578006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1818832 + ... + 1824919.

It is an arithmetic number, because the mean of its divisors is an integer number (1619647764).

Almost surely, 2^11091578044 is an apocalyptic number.

It is an amenable number.

11091578044 is a deficient number, since it is larger than the sum of its proper divisors (8344195124).

11091578044 is a wasteful number, since it uses less digits than its factorization.

11091578044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3644516 (or 3644514 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 40.

The spelling of 11091578044 in words is "eleven billion, ninety-one million, five hundred seventy-eight thousand, forty-four".