11666066610 has 128 divisors (see below), whose sum is σ = 31602348288. Its totient is φ = 2731520000.

The previous prime is 11666066597. The next prime is 11666066617. The reversal of 11666066610 is 1666066611.

It is a happy number.

11666066610 is digitally balanced in base 2 and base 5, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×11666066610² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11666066617) 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 63 ways as a sum of consecutive naturals, for example, 1362262 + ... + 1370798.

It is an arithmetic number, because the mean of its divisors is an integer number (246893346).

Almost surely, 2^11666066610 is an apocalyptic number.

11666066610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11666066610, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15801174144).

11666066610 is an abundant number, since it is smaller than the sum of its proper divisors (19936281678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11666066610 is a wasteful number, since it uses less digits than its factorization.

11666066610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8700.

The product of its (nonzero) digits is 46656, while the sum is 39.

Subtracting from 11666066610 its reverse (1666066611), we obtain a palindrome (9999999999).

The spelling of 11666066610 in words is "eleven billion, six hundred sixty-six million, sixty-six thousand, six hundred ten".