11227518280 has 128 divisors (see below), whose sum is σ = 28785456000. Its totient is φ = 3904727040.

The previous prime is 11227518277. The next prime is 11227518293. The reversal of 11227518280 is 8281572211.

It is a Harshad number since it is a multiple of its sum of digits (37).

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, 954676 + ... + 966364.

It is an arithmetic number, because the mean of its divisors is an integer number (224886375).

Almost surely, 2^11227518280 is an apocalyptic number.

11227518280 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 11227518280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14392728000).

11227518280 is an abundant number, since it is smaller than the sum of its proper divisors (17557937720).

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

11227518280 is a wasteful number, since it uses less digits than its factorization.

11227518280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11807 (or 11803 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 37.

The spelling of 11227518280 in words is "eleven billion, two hundred twenty-seven million, five hundred eighteen thousand, two hundred eighty".