2166515016 has 32 divisors (see below), whose sum is σ = 5492577600. Its totient is φ = 711999680.

The previous prime is 2166514997. The next prime is 2166515017. The reversal of 2166515016 is 6105156612.

It is not an unprimeable number, because it can be changed into a prime (2166515017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 634011 + ... + 637418.

It is an arithmetic number, because the mean of its divisors is an integer number (171643050).

Almost surely, 2^2166515016 is an apocalyptic number.

It is an amenable number.

2166515016 is an abundant number, since it is smaller than the sum of its proper divisors (3326062584).

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

2166515016 is a wasteful number, since it uses less digits than its factorization.

2166515016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1271509 (or 1271505 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 2166515016 is about 46545.8377945870. The cubic root of 2166515016 is about 1293.9591555055.

The spelling of 2166515016 in words is "two billion, one hundred sixty-six million, five hundred fifteen thousand, sixteen".