11123456777788 has 12 divisors (see below), whose sum is σ = 20312399333520. Its totient is φ = 5319914111072.

The previous prime is 11123456777707. The next prime is 11123456777819. The reversal of 11123456777788 is 88777765432111.

11123456777788 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×11123456777788² (a number of 27 digits) contains 22 as substring.

It is a plaindrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60453569353 + ... + 60453569536.

It is an arithmetic number, because the mean of its divisors is an integer number (1692699944460).

Almost surely, 2^{11123456777788} is an apocalyptic number.

It is an amenable number.

11123456777788 is a deficient number, since it is larger than the sum of its proper divisors (9188942555732).

11123456777788 is a wasteful number, since it uses less digits than its factorization.

11123456777788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120907138916 (or 120907138914 counting only the distinct ones).

The product of its digits is 110638080, while the sum is 67.

The spelling of 11123456777788 in words is "eleven trillion, one hundred twenty-three billion, four hundred fifty-six million, seven hundred seventy-seven thousand, seven hundred eighty-eight".