11489658880 has 192 divisors, whose sum is σ = 31921344000. Its totient is φ = 3887529984.

The previous prime is 11489658847. The next prime is 11489658883. The reversal of 11489658880 is 8885698411.

It is a super-2 number, since 2×11489658880² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11489658883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5661706 + ... + 5663734.

It is an arithmetic number, because the mean of its divisors is an integer number (166257000).

Almost surely, 2^11489658880 is an apocalyptic number.

11489658880 is a gapful number since it is divisible by the number (10) 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 11489658880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15960672000).

11489658880 is an abundant number, since it is smaller than the sum of its proper divisors (20431685120).

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

11489658880 is an equidigital number, since it uses as much as digits as its factorization.

11489658880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2142 (or 2122 counting only the distinct ones).

The product of its (nonzero) digits is 4423680, while the sum is 58.

The spelling of 11489658880 in words is "eleven billion, four hundred eighty-nine million, six hundred fifty-eight thousand, eight hundred eighty".