2016661712 has 80 divisors (see below), whose sum is σ = 4484712960. Its totient is φ = 871259136.

The previous prime is 2016661709. The next prime is 2016661741. The reversal of 2016661712 is 2171666102.

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, 220364 + ... + 229332.

It is an arithmetic number, because the mean of its divisors is an integer number (56058912).

Almost surely, 2^2016661712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2016661712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2242356480).

2016661712 is an abundant number, since it is smaller than the sum of its proper divisors (2468051248).

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

2016661712 is a wasteful number, since it uses less digits than its factorization.

2016661712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9060 (or 9054 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 2016661712 is about 44907.2567855130. The cubic root of 2016661712 is about 1263.4101190595.

The spelling of 2016661712 in words is "two billion, sixteen million, six hundred sixty-one thousand, seven hundred twelve".