10661606165 has 8 divisors (see below), whose sum is σ = 14621631360. Its totient is φ = 7310815632.

The previous prime is 10661606143. The next prime is 10661606167. The reversal of 10661606165 is 56160616601.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10661606165 is a prime.

It is a super-2 number, since 2×10661606165² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10661606167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152308625 + ... + 152308694.

It is an arithmetic number, because the mean of its divisors is an integer number (1827703920).

Almost surely, 2^10661606165 is an apocalyptic number.

It is an amenable number.

10661606165 is a deficient number, since it is larger than the sum of its proper divisors (3960025195).

10661606165 is an equidigital number, since it uses as much as digits as its factorization.

10661606165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304617331.

The product of its (nonzero) digits is 38880, while the sum is 38.

The spelling of 10661606165 in words is "ten billion, six hundred sixty-one million, six hundred six thousand, one hundred sixty-five".