2216561910 has 32 divisors (see below), whose sum is σ = 5379527520. Its totient is φ = 584441088.

The previous prime is 2216561909. The next prime is 2216561927. The reversal of 2216561910 is 191656122.

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, 412417 + ... + 417756.

It is an arithmetic number, because the mean of its divisors is an integer number (168110235).

Almost surely, 2^2216561910 is an apocalyptic number.

2216561910 is an abundant number, since it is smaller than the sum of its proper divisors (3162965610).

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

2216561910 is a wasteful number, since it uses less digits than its factorization.

2216561910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830272.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 2216561910 is about 47080.3771225338. The cubic root of 2216561910 is about 1303.8469696810.

The spelling of 2216561910 in words is "two billion, two hundred sixteen million, five hundred sixty-one thousand, nine hundred ten".