11111234566779 has 64 divisors (see below), whose sum is σ = 17228395008000. Its totient is φ = 7069273263360.

The previous prime is 11111234566777. The next prime is 11111234566823. The reversal of 11111234566779 is 97766543211111.

It is a happy number.

11111234566779 is a `hidden beast` number, since 1 + 1 + 1 + 1 + 1 + 2 + 3 + 4 + 566 + 7 + 79 = 666.

It is not a de Polignac number, because 11111234566779 - 2¹ = 11111234566777 is a prime.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (11111234566777) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 28036069 + ... + 28429625.

It is an arithmetic number, because the mean of its divisors is an integer number (269193672000).

Almost surely, 2^{11111234566779} is an apocalyptic number.

11111234566779 is a deficient number, since it is larger than the sum of its proper divisors (6117160441221).

11111234566779 is a wasteful number, since it uses less digits than its factorization.

11111234566779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394065 (or 394059 counting only the distinct ones).

The product of its digits is 1905120, while the sum is 54.

The spelling of 11111234566779 in words is "eleven trillion, one hundred eleven billion, two hundred thirty-four million, five hundred sixty-six thousand, seven hundred seventy-nine".