1227755715480 has 768 divisors, whose sum is σ = 4995849830400. Its totient is φ = 255007457280.

The previous prime is 1227755715437. The next prime is 1227755715481. The reversal of 1227755715480 is 845175577221.

1227755715480 is a `hidden beast` number, since 1 + 2 + 2 + 7 + 7 + 557 + 1 + 5 + 4 + 80 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1227755715481) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 787526941 + ... + 787528499.

It is an arithmetic number, because the mean of its divisors is an integer number (6505012800).

Almost surely, 2^{1227755715480} is an apocalyptic number.

1227755715480 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 1227755715480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2497924915200).

1227755715480 is an abundant number, since it is smaller than the sum of its proper divisors (3768094114920).

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

1227755715480 is a wasteful number, since it uses less digits than its factorization.

1227755715480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2224 (or 2217 counting only the distinct ones).

The product of its (nonzero) digits is 5488000, while the sum is 54.

The spelling of 1227755715480 in words is "one trillion, two hundred twenty-seven billion, seven hundred fifty-five million, seven hundred fifteen thousand, four hundred eighty".