11177760661 has 16 divisors (see below), whose sum is σ = 11906637120. Its totient is φ = 10456992000.

The previous prime is 11177760653. The next prime is 11177760677. The reversal of 11177760661 is 16606777111.

It is a cyclic number.

It is not a de Polignac number, because 11177760661 - 2³ = 11177760653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11177760631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2331655 + ... + 2336443.

It is an arithmetic number, because the mean of its divisors is an integer number (744164820).

Almost surely, 2^11177760661 is an apocalyptic number.

It is an amenable number.

11177760661 is a deficient number, since it is larger than the sum of its proper divisors (728876459).

11177760661 is a wasteful number, since it uses less digits than its factorization.

11177760661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5604.

The product of its (nonzero) digits is 74088, while the sum is 43.

The spelling of 11177760661 in words is "eleven billion, one hundred seventy-seven million, seven hundred sixty thousand, six hundred sixty-one".