11813121330 has 96 divisors (see below), whose sum is σ = 31020112512. Its totient is φ = 2869102080.

The previous prime is 11813121323. The next prime is 11813121371. The reversal of 11813121330 is 3312131811.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 11813121330.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 478059 + ... + 502161.

It is an arithmetic number, because the mean of its divisors is an integer number (323126172).

Almost surely, 2^11813121330 is an apocalyptic number.

11813121330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11813121330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15510056256).

11813121330 is an abundant number, since it is smaller than the sum of its proper divisors (19206991182).

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

11813121330 is a wasteful number, since it uses less digits than its factorization.

11813121330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24192 (or 24161 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The spelling of 11813121330 in words is "eleven billion, eight hundred thirteen million, one hundred twenty-one thousand, three hundred thirty".