11821489480 has 32 divisors (see below), whose sum is σ = 27216921600. Its totient is φ = 4618627776.

The previous prime is 11821489441. The next prime is 11821489487. The reversal of 11821489480 is 8498412811.

It is a super-2 number, since 2×11821489480² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11821489480.

It is not an unprimeable number, because it can be changed into a prime (11821489487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3434760 + ... + 3438199.

It is an arithmetic number, because the mean of its divisors is an integer number (850528800).

Almost surely, 2^11821489480 is an apocalyptic number.

11821489480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11821489480 is an abundant number, since it is smaller than the sum of its proper divisors (15395432120).

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

11821489480 is a wasteful number, since it uses less digits than its factorization.

11821489480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6873013 (or 6873009 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 46.

The spelling of 11821489480 in words is "eleven billion, eight hundred twenty-one million, four hundred eighty-nine thousand, four hundred eighty".