11118728880 has 120 divisors (see below), whose sum is σ = 42674759712. Its totient is φ = 2541422592.

The previous prime is 11118728843. The next prime is 11118728891. The reversal of 11118728880 is 8882781111.

It is a happy number.

11118728880 is a `hidden beast` number, since 111 + 187 + 288 + 80 = 666.

11118728880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-2 number, since 2×11118728880² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1098009 + ... + 1108088.

Almost surely, 2^11118728880 is an apocalyptic number.

11118728880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11118728880 is an abundant number, since it is smaller than the sum of its proper divisors (31556030832).

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

11118728880 is a wasteful number, since it uses less digits than its factorization.

11118728880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2206123 (or 2206114 counting only the distinct ones).

The product of its (nonzero) digits is 57344, while the sum is 45.

The spelling of 11118728880 in words is "eleven billion, one hundred eighteen million, seven hundred twenty-eight thousand, eight hundred eighty".