1227748263812 has 48 divisors (see below), whose sum is σ = 2566356293760. Its totient is φ = 502796270592.

The previous prime is 1227748263811. The next prime is 1227748263817. The reversal of 1227748263812 is 2183628477221.

It is not an unprimeable number, because it can be changed into a prime (1227748263811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7715078 + ... + 7872605.

It is an arithmetic number, because the mean of its divisors is an integer number (53465756120).

Almost surely, 2^{1227748263812} is an apocalyptic number.

It is an amenable number.

1227748263812 is an abundant number, since it is smaller than the sum of its proper divisors (1338608029948).

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

1227748263812 is a wasteful number, since it uses less digits than its factorization.

1227748263812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15587820 (or 15587818 counting only the distinct ones).

The product of its digits is 3612672, while the sum is 53.

The spelling of 1227748263812 in words is "one trillion, two hundred twenty-seven billion, seven hundred forty-eight million, two hundred sixty-three thousand, eight hundred twelve".