12228740483840 has 144 divisors (see below), whose sum is σ = 31019243220000. Its totient is φ = 4603085783040.

The previous prime is 12228740483837. The next prime is 12228740483881. The reversal of 12228740483840 is 4838404782221.

12228740483840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12228740483840² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163140770 + ... + 163215710.

It is an arithmetic number, because the mean of its divisors is an integer number (215411411250).

Almost surely, 2^{12228740483840} is an apocalyptic number.

12228740483840 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 12228740483840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15509621610000).

12228740483840 is an abundant number, since it is smaller than the sum of its proper divisors (18790502736160).

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

12228740483840 is an equidigital number, since it uses as much as digits as its factorization.

12228740483840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82478 (or 82464 counting only the distinct ones).

The product of its (nonzero) digits is 5505024, while the sum is 53.

The spelling of 12228740483840 in words is "twelve trillion, two hundred twenty-eight billion, seven hundred forty million, four hundred eighty-three thousand, eight hundred forty".