1166666027775 has 24 divisors (see below), whose sum is σ = 1937310952080. Its totient is φ = 619504746240.

The previous prime is 1166666027719. The next prime is 1166666027801. The reversal of 1166666027775 is 5777206666611.

It is not a de Polignac number, because 1166666027775 - 2²¹ = 1166663930623 is a prime.

It is a super-2 number, since 2×1166666027775² (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 23 ways as a sum of consecutive naturals, for example, 33946902 + ... + 33981251.

It is an arithmetic number, because the mean of its divisors is an integer number (80721289670).

Almost surely, 2^{1166666027775} is an apocalyptic number.

1166666027775 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1166666027775 is a deficient number, since it is larger than the sum of its proper divisors (770644924305).

1166666027775 is a wasteful number, since it uses less digits than its factorization.

1166666027775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67928395 (or 67928390 counting only the distinct ones).

The product of its (nonzero) digits is 26671680, while the sum is 60.

The spelling of 1166666027775 in words is "one trillion, one hundred sixty-six billion, six hundred sixty-six million, twenty-seven thousand, seven hundred seventy-five".