10611116661 has 32 divisors (see below), whose sum is σ = 15184630656. Its totient is φ = 6567680000.

The previous prime is 10611116651. The next prime is 10611116683. The reversal of 10611116661 is 16661111601.

It is a cyclic number.

It is not a de Polignac number, because 10611116661 - 2⁶ = 10611116597 is a prime.

It is a super-2 number, since 2×10611116661² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10611116611) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1443766 + ... + 1451096.

It is an arithmetic number, because the mean of its divisors is an integer number (474519708).

Almost surely, 2^10611116661 is an apocalyptic number.

It is an amenable number.

10611116661 is a deficient number, since it is larger than the sum of its proper divisors (4573513995).

10611116661 is a wasteful number, since it uses less digits than its factorization.

10611116661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7733.

The product of its (nonzero) digits is 1296, while the sum is 30.

The spelling of 10611116661 in words is "ten billion, six hundred eleven million, one hundred sixteen thousand, six hundred sixty-one".