2216185455 has 32 divisors (see below), whose sum is σ = 3878461440. Its totient is φ = 1071678080.

The previous prime is 2216185451. The next prime is 2216185459. The reversal of 2216185455 is 5545816122.

It is an interprime number because it is at equal distance from previous prime (2216185451) and next prime (2216185459).

It is not a de Polignac number, because 2216185455 - 2² = 2216185451 is a prime.

It is a super-2 number, since 2×2216185455² = 9822955941907114050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2216185451) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45661 + ... + 80729.

It is an arithmetic number, because the mean of its divisors is an integer number (121201920).

Almost surely, 2^2216185455 is an apocalyptic number.

2216185455 is a deficient number, since it is larger than the sum of its proper divisors (1662275985).

2216185455 is a wasteful number, since it uses less digits than its factorization.

2216185455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35471.

The product of its digits is 96000, while the sum is 39.

The square root of 2216185455 is about 47076.3789495326. The cubic root of 2216185455 is about 1303.7731515306.

The spelling of 2216185455 in words is "two billion, two hundred sixteen million, one hundred eighty-five thousand, four hundred fifty-five".