1227765938116 has 27 divisors (see below), whose sum is σ = 2181401344269. Its totient is φ = 604647405648.

The previous prime is 1227765938111. The next prime is 1227765938117. The reversal of 1227765938116 is 6118395677221.

The square root of 1227765938116 is 1108046.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1129446064516 + 98319873600 = 1062754^2 + 313560^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1227765938111) 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 8 ways as a sum of consecutive naturals, for example, 148474030 + ... + 148482298.

Almost surely, 2^{1227765938116} is an apocalyptic number.

1227765938116 is the 1108046-th square number.

It is an amenable number.

1227765938116 is a deficient number, since it is larger than the sum of its proper divisors (953635406153).

1227765938116 is an frugal number, since it uses more digits than its factorization.

1227765938116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16676 (or 8338 counting only the distinct ones).

The product of its digits is 7620480, while the sum is 58.

The spelling of 1227765938116 in words is "one trillion, two hundred twenty-seven billion, seven hundred sixty-five million, nine hundred thirty-eight thousand, one hundred sixteen".