8085416661 has 24 divisors (see below), whose sum is σ = 13373942400. Its totient is φ = 4611034656.

The previous prime is 8085416657. The next prime is 8085416663. The reversal of 8085416661 is 1666145808.

It is not a de Polignac number, because 8085416661 - 2² = 8085416657 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8085416663) 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, 95886 + ... + 159263.

It is an arithmetic number, because the mean of its divisors is an integer number (557247600).

Almost surely, 2^8085416661 is an apocalyptic number.

It is an amenable number.

8085416661 is a deficient number, since it is larger than the sum of its proper divisors (5288525739).

8085416661 is a wasteful number, since it uses less digits than its factorization.

8085416661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255665 (or 255662 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 8085416661 is about 89918.9449504386. The cubic root of 8085416661 is about 2007.0928709381.

The spelling of 8085416661 in words is "eight billion, eighty-five million, four hundred sixteen thousand, six hundred sixty-one".