1227145043848 has 8 divisors (see below), whose sum is σ = 2300896957230. Its totient is φ = 613572521920.

The previous prime is 1227145043821. The next prime is 1227145043849. The reversal of 1227145043848 is 8483405417221.

It can be written as a sum of positive squares in only one way, i.e., 632244439044 + 594900604804 = 795138^2 + 771298^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (1227145043849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76696565233 + ... + 76696565248.

Almost surely, 2^{1227145043848} is an apocalyptic number.

It is an amenable number.

1227145043848 is a deficient number, since it is larger than the sum of its proper divisors (1073751913382).

1227145043848 is a wasteful number, since it uses less digits than its factorization.

1227145043848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153393130487 (or 153393130483 counting only the distinct ones).

The product of its (nonzero) digits is 1720320, while the sum is 49.

The spelling of 1227145043848 in words is "one trillion, two hundred twenty-seven billion, one hundred forty-five million, forty-three thousand, eight hundred forty-eight".