1228530985288 has 16 divisors (see below), whose sum is σ = 2331248557680. Its totient is φ = 606864703248.

The previous prime is 1228530985271. The next prime is 1228530985289. The reversal of 1228530985288 is 8825890358221.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1228530985289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 925097970 + ... + 925099297.

It is an arithmetic number, because the mean of its divisors is an integer number (145703034855).

Almost surely, 2^{1228530985288} is an apocalyptic number.

It is an amenable number.

1228530985288 is a deficient number, since it is larger than the sum of its proper divisors (1102717572392).

1228530985288 is a wasteful number, since it uses less digits than its factorization.

1228530985288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1850197356 (or 1850197352 counting only the distinct ones).

The product of its (nonzero) digits is 22118400, while the sum is 61.

The spelling of 1228530985288 in words is "one trillion, two hundred twenty-eight billion, five hundred thirty million, nine hundred eighty-five thousand, two hundred eighty-eight".