10661121766 has 8 divisors (see below), whose sum is σ = 16331931360. Its totient is φ = 5217144648.

The previous prime is 10661121763. The next prime is 10661121847. The reversal of 10661121766 is 66712116601.

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

It is a super-2 number, since 2×10661121766² (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 (10661121763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56708001 + ... + 56708188.

It is an arithmetic number, because the mean of its divisors is an integer number (2041491420).

Almost surely, 2^10661121766 is an apocalyptic number.

10661121766 is a deficient number, since it is larger than the sum of its proper divisors (5670809594).

10661121766 is a wasteful number, since it uses less digits than its factorization.

10661121766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113416238.

The product of its (nonzero) digits is 18144, while the sum is 37.

The spelling of 10661121766 in words is "ten billion, six hundred sixty-one million, one hundred twenty-one thousand, seven hundred sixty-six".