1123456777779 has 32 divisors (see below), whose sum is σ = 1715286274560. Its totient is φ = 640719129600.

The previous prime is 1123456777777. The next prime is 1123456777801. The reversal of 1123456777779 is 9777776543211.

It is not a de Polignac number, because 1123456777779 - 2¹ = 1123456777777 is a prime.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (1123456777777) 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 31 ways as a sum of consecutive naturals, for example, 33450307 + ... + 33483875.

It is an arithmetic number, because the mean of its divisors is an integer number (53602696080).

Almost surely, 2^{1123456777779} is an apocalyptic number.

1123456777779 is a deficient number, since it is larger than the sum of its proper divisors (591829496781).

1123456777779 is a wasteful number, since it uses less digits than its factorization.

1123456777779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36651.

The product of its digits is 108909360, while the sum is 66.

The spelling of 1123456777779 in words is "one trillion, one hundred twenty-three billion, four hundred fifty-six million, seven hundred seventy-seven thousand, seven hundred seventy-nine".