2216557655 has 16 divisors (see below), whose sum is σ = 2867889024. Its totient is φ = 1634891520.

The previous prime is 2216557649. The next prime is 2216557697. The reversal of 2216557655 is 5567556122.

It is a happy number.

It is not a de Polignac number, because 2216557655 - 2¹⁶ = 2216492119 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35810 + ... + 75600.

It is an arithmetic number, because the mean of its divisors is an integer number (179243064).

Almost surely, 2^2216557655 is an apocalyptic number.

2216557655 is a deficient number, since it is larger than the sum of its proper divisors (651331369).

2216557655 is a wasteful number, since it uses less digits than its factorization.

2216557655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40666.

The product of its digits is 630000, while the sum is 44.

The square root of 2216557655 is about 47080.3319338341. The cubic root of 2216557655 is about 1303.8461353750.

The spelling of 2216557655 in words is "two billion, two hundred sixteen million, five hundred fifty-seven thousand, six hundred fifty-five".