105666064997 has 8 divisors (see below), whose sum is σ = 110263568640. Its totient is φ = 101068838640.

The previous prime is 105666064883. The next prime is 105666065023. The reversal of 105666064997 is 799460666501.

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 not a de Polignac number, because 105666064997 - 2¹⁰ = 105666063973 is a prime.

It is a super-2 number, since 2×105666064997² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105666094997) 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, 1219172 + ... + 1302962.

It is an arithmetic number, because the mean of its divisors is an integer number (13782946080).

Almost surely, 2^105666064997 is an apocalyptic number.

It is an amenable number.

105666064997 is a deficient number, since it is larger than the sum of its proper divisors (4597503643).

105666064997 is an equidigital number, since it uses as much as digits as its factorization.

105666064997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138643.

The product of its (nonzero) digits is 14696640, while the sum is 59.

The spelling of 105666064997 in words is "one hundred five billion, six hundred sixty-six million, sixty-four thousand, nine hundred ninety-seven".