2161216602 has 48 divisors (see below), whose sum is σ = 4744632672. Its totient is φ = 710920800.

The previous prime is 2161216543. The next prime is 2161216609. The reversal of 2161216602 is 2066121612.

It is not an unprimeable number, because it can be changed into a prime (2161216609) 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, 531477 + ... + 535527.

It is an arithmetic number, because the mean of its divisors is an integer number (98846514).

Almost surely, 2^2161216602 is an apocalyptic number.

2161216602 is an abundant number, since it is smaller than the sum of its proper divisors (2583416070).

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

2161216602 is a wasteful number, since it uses less digits than its factorization.

2161216602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4443 (or 4440 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 2161216602 is about 46488.8868655725. The cubic root of 2161216602 is about 1292.9034619455.

The spelling of 2161216602 in words is "two billion, one hundred sixty-one million, two hundred sixteen thousand, six hundred two".