11229734880 has 864 divisors, whose sum is σ = 50652568512. Its totient is φ = 2198568960.

The previous prime is 11229734837. The next prime is 11229734891. The reversal of 11229734880 is 8843792211.

It is a happy number.

11229734880 is a `hidden beast` number, since 1 + 1 + 229 + 7 + 348 + 80 = 666.

It is a super-2 number, since 2×11229734880² (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 a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 158165245 + ... + 158165315.

It is an arithmetic number, because the mean of its divisors is an integer number (58625658).

Almost surely, 2^11229734880 is an apocalyptic number.

11229734880 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 11229734880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25326284256).

11229734880 is an abundant number, since it is smaller than the sum of its proper divisors (39422833632).

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

11229734880 is a wasteful number, since it uses less digits than its factorization.

11229734880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200 (or 118 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The spelling of 11229734880 in words is "eleven billion, two hundred twenty-nine million, seven hundred thirty-four thousand, eight hundred eighty".