127644223356 has 96 divisors (see below), whose sum is σ = 356500307520. Its totient is φ = 39262503168.

The previous prime is 127644223351. The next prime is 127644223391. The reversal of 127644223356 is 653322446721.

127644223356 is a `hidden beast` number, since 1 + 2 + 76 + 4 + 4 + 223 + 356 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127644223351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4947466 + ... + 4973198.

It is an arithmetic number, because the mean of its divisors is an integer number (3713544870).

Almost surely, 2^127644223356 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 127644223356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178250153760).

127644223356 is an abundant number, since it is smaller than the sum of its proper divisors (228856084164).

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

127644223356 is a wasteful number, since it uses less digits than its factorization.

127644223356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29292 (or 29284 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 45.

The spelling of 127644223356 in words is "one hundred twenty-seven billion, six hundred forty-four million, two hundred twenty-three thousand, three hundred fifty-six".