10666111665500 has 96 divisors (see below), whose sum is σ = 24192299459328. Its totient is φ = 4105027080000.

The previous prime is 10666111665481. The next prime is 10666111665523. The reversal of 10666111665500 is 556611166601.

It is a super-2 number, since 2×10666111665500² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2261726 + ... + 5142725.

It is an arithmetic number, because the mean of its divisors is an integer number (252003119368).

Almost surely, 2^{10666111665500} is an apocalyptic number.

10666111665500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10666111665500 is an abundant number, since it is smaller than the sum of its proper divisors (13526187793828).

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

10666111665500 is a wasteful number, since it uses less digits than its factorization.

10666111665500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7404580 (or 7404568 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 44.

The spelling of 10666111665500 in words is "ten trillion, six hundred sixty-six billion, one hundred eleven million, six hundred sixty-five thousand, five hundred".