11178766643 has 16 divisors (see below), whose sum is σ = 12236002560. Its totient is φ = 10128429600.

The previous prime is 11178766601. The next prime is 11178766657. The reversal of 11178766643 is 34666787111.

11178766643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 11178766643 - 2¹² = 11178762547 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11178766591 and 11178766600.

It is not an unprimeable number, because it can be changed into a prime (11178666643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5948378 + ... + 5950256.

It is an arithmetic number, because the mean of its divisors is an integer number (764750160).

Almost surely, 2^11178766643 is an apocalyptic number.

11178766643 is a deficient number, since it is larger than the sum of its proper divisors (1057235917).

11178766643 is a wasteful number, since it uses less digits than its factorization.

11178766643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3418.

The product of its digits is 1016064, while the sum is 50.

The spelling of 11178766643 in words is "eleven billion, one hundred seventy-eight million, seven hundred sixty-six thousand, six hundred forty-three".