8005661712 has 60 divisors (see below), whose sum is σ = 23127480064. Its totient is φ = 2582470080.

The previous prime is 8005661701. The next prime is 8005661749. The reversal of 8005661712 is 2171665008.

8005661712 is a `hidden beast` number, since 80 + 0 + 566 + 1 + 7 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 892228 + ... + 901155.

Almost surely, 2^8005661712 is an apocalyptic number.

It is an amenable number.

8005661712 is an abundant number, since it is smaller than the sum of its proper divisors (15121818352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8005661712 is a wasteful number, since it uses less digits than its factorization.

8005661712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1793428 (or 1793419 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 8005661712 is about 89474.3634344498. The cubic root of 8005661712 is about 2000.4716980751.

The spelling of 8005661712 in words is "eight billion, five million, six hundred sixty-one thousand, seven hundred twelve".