11177666643 has 32 divisors (see below), whose sum is σ = 17805876480. Its totient is φ = 6147239040.

The previous prime is 11177666641. The next prime is 11177666671. The reversal of 11177666643 is 34666677111.

11177666643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11177666643 - 2¹ = 11177666641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11177666592 and 11177666601.

It is not an unprimeable number, because it can be changed into a prime (11177666641) 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 31 ways as a sum of consecutive naturals, for example, 195496 + ... + 246117.

It is an arithmetic number, because the mean of its divisors is an integer number (556433640).

Almost surely, 2^11177666643 is an apocalyptic number.

11177666643 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11177666643 is a deficient number, since it is larger than the sum of its proper divisors (6628209837).

11177666643 is a wasteful number, since it uses less digits than its factorization.

11177666643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441699.

The product of its digits is 762048, while the sum is 48.

The spelling of 11177666643 in words is "eleven billion, one hundred seventy-seven million, six hundred sixty-six thousand, six hundred forty-three".