2216491775 has 24 divisors (see below), whose sum is σ = 2828402304. Its totient is φ = 1722009600.

The previous prime is 2216491769. The next prime is 2216491793. The reversal of 2216491775 is 5771946122.

It is not a de Polignac number, because 2216491775 - 2²⁰ = 2215443199 is a prime.

It is a super-3 number, since 3×2216491775³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 223727 + ... + 233423.

It is an arithmetic number, because the mean of its divisors is an integer number (117850096).

Almost surely, 2^2216491775 is an apocalyptic number.

2216491775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2216491775 is a deficient number, since it is larger than the sum of its proper divisors (611910529).

2216491775 is a wasteful number, since it uses less digits than its factorization.

2216491775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9971 (or 9966 counting only the distinct ones).

The product of its digits is 211680, while the sum is 44.

The square root of 2216491775 is about 47079.6322734152. The cubic root of 2216491775 is about 1303.8332177120.

The spelling of 2216491775 in words is "two billion, two hundred sixteen million, four hundred ninety-one thousand, seven hundred seventy-five".