1228815381344 has 48 divisors (see below), whose sum is σ = 2432489875200. Its totient is φ = 611041751040.

The previous prime is 1228815381281. The next prime is 1228815381349. The reversal of 1228815381344 is 4431835188221.

It is a junction number, because it is equal to n+sod(n) for n = 1228815381292 and 1228815381301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228815381349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27561182 + ... + 27605730.

It is an arithmetic number, because the mean of its divisors is an integer number (50676872400).

Almost surely, 2^{1228815381344} is an apocalyptic number.

It is an amenable number.

1228815381344 is a deficient number, since it is larger than the sum of its proper divisors (1203674493856).

1228815381344 is a wasteful number, since it uses less digits than its factorization.

1228815381344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49263 (or 49255 counting only the distinct ones).

The product of its digits is 1474560, while the sum is 50.

The spelling of 1228815381344 in words is "one trillion, two hundred twenty-eight billion, eight hundred fifteen million, three hundred eighty-one thousand, three hundred forty-four".