11011554444 has 96 divisors (see below), whose sum is σ = 28582444800. Its totient is φ = 3271311360.

The previous prime is 11011554427. The next prime is 11011554457. The reversal of 11011554444 is 44445511011.

It is a super-2 number, since 2×11011554444² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3183564 + ... + 3187020.

It is an arithmetic number, because the mean of its divisors is an integer number (297733800).

Almost surely, 2^11011554444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11011554444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14291222400).

11011554444 is an abundant number, since it is smaller than the sum of its proper divisors (17570890356).

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

11011554444 is a wasteful number, since it uses less digits than its factorization.

11011554444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3943 (or 3941 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 30.

The spelling of 11011554444 in words is "eleven billion, eleven million, five hundred fifty-four thousand, four hundred forty-four".