8166011285 has 16 divisors (see below), whose sum is σ = 10377792576. Its totient is φ = 6147249408.

The previous prime is 8166011263. The next prime is 8166011317. The reversal of 8166011285 is 5821106618.

It is a cyclic number.

It is not a de Polignac number, because 8166011285 - 2²⁰ = 8164962709 is a prime.

It is a Duffinian number.

It is a Curzon number.

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, 684542 + ... + 696368.

It is an arithmetic number, because the mean of its divisors is an integer number (648612036).

Almost surely, 2^8166011285 is an apocalyptic number.

8166011285 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

8166011285 is a deficient number, since it is larger than the sum of its proper divisors (2211781291).

8166011285 is a wasteful number, since it uses less digits than its factorization.

8166011285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19972.

The product of its (nonzero) digits is 23040, while the sum is 38.

The square root of 8166011285 is about 90365.9852212103. The cubic root of 8166011285 is about 2013.7396683605.

The spelling of 8166011285 in words is "eight billion, one hundred sixty-six million, eleven thousand, two hundred eighty-five".