10665066149991 has 24 divisors (see below), whose sum is σ = 16842013428240. Its totient is φ = 6449655436800.

The previous prime is 10665066149989. The next prime is 10665066150017. The reversal of 10665066149991 is 19994166056601.

10665066149991 is a `hidden beast` number, since 1 + 0 + 6 + 6 + 5 + 0 + 6 + 614 + 9 + 9 + 9 + 1 = 666.

It is not a de Polignac number, because 10665066149991 - 2¹ = 10665066149989 is a prime.

It is a super-2 number, since 2×10665066149991² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10665066149981) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 116795946 + ... + 116887223.

It is an arithmetic number, because the mean of its divisors is an integer number (701750559510).

Almost surely, 2^{10665066149991} is an apocalyptic number.

10665066149991 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

10665066149991 is a deficient number, since it is larger than the sum of its proper divisors (6176947278249).

10665066149991 is a wasteful number, since it uses less digits than its factorization.

10665066149991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233683647 (or 233683644 counting only the distinct ones).

The product of its (nonzero) digits is 18895680, while the sum is 63.

The spelling of 10665066149991 in words is "ten trillion, six hundred sixty-five billion, sixty-six million, one hundred forty-nine thousand, nine hundred ninety-one".