1227749679912 has 64 divisors (see below), whose sum is σ = 3508171516800. Its totient is φ = 350754094080.

The previous prime is 1227749679889. The next prime is 1227749679967. The reversal of 1227749679912 is 2199769477221.

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, 1579164 + ... + 2224692.

It is an arithmetic number, because the mean of its divisors is an integer number (54815179950).

Almost surely, 2^{1227749679912} is an apocalyptic number.

1227749679912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1227749679912 is an abundant number, since it is smaller than the sum of its proper divisors (2280421836888).

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

1227749679912 is a wasteful number, since it uses less digits than its factorization.

1227749679912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656866 (or 656862 counting only the distinct ones).

The product of its digits is 48009024, while the sum is 66.

The spelling of 1227749679912 in words is "one trillion, two hundred twenty-seven billion, seven hundred forty-nine million, six hundred seventy-nine thousand, nine hundred twelve".