1066443643695 has 16 divisors (see below), whose sum is σ = 1706495097312. Its totient is φ = 568708187520.

The previous prime is 1066443643687. The next prime is 1066443643709. The reversal of 1066443643695 is 5963463446601.

It is not a de Polignac number, because 1066443643695 - 2³ = 1066443643687 is a prime.

It is a super-2 number, since 2×1066443643695² (a number of 25 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 15 ways as a sum of consecutive naturals, for example, 3716812 + ... + 3993441.

It is an arithmetic number, because the mean of its divisors is an integer number (106655943582).

Almost surely, 2^{1066443643695} is an apocalyptic number.

1066443643695 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1066443643695 is a deficient number, since it is larger than the sum of its proper divisors (640051453617).

1066443643695 is an equidigital number, since it uses as much as digits as its factorization.

1066443643695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7719482.

The product of its (nonzero) digits is 33592320, while the sum is 57.

The spelling of 1066443643695 in words is "one trillion, sixty-six billion, four hundred forty-three million, six hundred forty-three thousand, six hundred ninety-five".