11453421320 has 96 divisors (see below), whose sum is σ = 29388985920. Its totient is φ = 3983717760.

The previous prime is 11453421313. The next prime is 11453421323. The reversal of 11453421320 is 2312435411.

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 11453421320.

It is not an unprimeable number, because it can be changed into a prime (11453421323) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 208157 + ... + 257363.

It is an arithmetic number, because the mean of its divisors is an integer number (306135270).

Almost surely, 2^11453421320 is an apocalyptic number.

11453421320 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 11453421320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14694492960).

11453421320 is an abundant number, since it is smaller than the sum of its proper divisors (17935564600).

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

11453421320 is a wasteful number, since it uses less digits than its factorization.

11453421320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49275 (or 49248 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 11453421320 its reverse (2312435411), we get a palindrome (13765856731).

The spelling of 11453421320 in words is "eleven billion, four hundred fifty-three million, four hundred twenty-one thousand, three hundred twenty".