1227312989760 has 1008 divisors, whose sum is σ = 4691476601280. Its totient is φ = 271484928000.

The previous prime is 1227312989741. The next prime is 1227312989761. The reversal of 1227312989760 is 679892137221.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1227312989760.

It is not an unprimeable number, because it can be changed into a prime (1227312989761) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1982734731 + ... + 1982735349.

It is an arithmetic number, because the mean of its divisors is an integer number (4654242660).

Almost surely, 2^{1227312989760} is an apocalyptic number.

1227312989760 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 1227312989760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2345738300640).

1227312989760 is an abundant number, since it is smaller than the sum of its proper divisors (3464163611520).

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

1227312989760 is a wasteful number, since it uses less digits than its factorization.

1227312989760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788 (or 754 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 57.

The spelling of 1227312989760 in words is "one trillion, two hundred twenty-seven billion, three hundred twelve million, nine hundred eighty-nine thousand, seven hundred sixty".