1227910543749 has 40 divisors (see below), whose sum is σ = 1845676694400. Its totient is φ = 813525812064.

The previous prime is 1227910543669. The next prime is 1227910543801. The reversal of 1227910543749 is 9473450197221.

1227910543749 is a `hidden beast` number, since 1 + 2 + 2 + 7 + 91 + 0 + 543 + 7 + 4 + 9 = 666.

It is not a de Polignac number, because 1227910543749 - 2¹¹ = 1227910541701 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1227910543695 and 1227910543704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1227910541749) 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 in 39 ways as a sum of consecutive naturals, for example, 93992592 + ... + 94005654.

It is an arithmetic number, because the mean of its divisors is an integer number (46141917360).

Almost surely, 2^{1227910543749} is an apocalyptic number.

It is an amenable number.

1227910543749 is a deficient number, since it is larger than the sum of its proper divisors (617766150651).

1227910543749 is a wasteful number, since it uses less digits than its factorization.

1227910543749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20191 (or 20182 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 54.

The spelling of 1227910543749 in words is "one trillion, two hundred twenty-seven billion, nine hundred ten million, five hundred forty-three thousand, seven hundred forty-nine".