2213556645 has 16 divisors (see below), whose sum is σ = 3545476992. Its totient is φ = 1179301440.

The previous prime is 2213556637. The next prime is 2213556679. The reversal of 2213556645 is 5466553122.

It is not a de Polignac number, because 2213556645 - 2³ = 2213556637 is a prime.

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, 64297 + ... + 92526.

It is an arithmetic number, because the mean of its divisors is an integer number (221592312).

Almost surely, 2^2213556645 is an apocalyptic number.

It is an amenable number.

2213556645 is a deficient number, since it is larger than the sum of its proper divisors (1331920347).

2213556645 is a wasteful number, since it uses less digits than its factorization.

2213556645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157772.

The product of its digits is 216000, while the sum is 39.

The square root of 2213556645 is about 47048.4499744678. The cubic root of 2213556645 is about 1303.2574413867.

The spelling of 2213556645 in words is "two billion, two hundred thirteen million, five hundred fifty-six thousand, six hundred forty-five".