2216536965 has 12 divisors (see below), whose sum is σ = 3841997484. Its totient is φ = 1182153024.

The previous prime is 2216536943. The next prime is 2216536991. The reversal of 2216536965 is 5696356122.

2216536965 is a `hidden beast` number, since 2 + 21 + 6 + 536 + 96 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1033108164 + 1183428801 = 32142^2 + 34401^2 .

It is not a de Polignac number, because 2216536965 - 2⁸ = 2216536709 is a prime.

It is a super-2 number, since 2×2216536965² = 9826072234422822450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 49256377 = 2216536965 / (2 + 2 + 1 + 6 + 5 + 3 + 6 + 9 + 6 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 2216536965.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24628144 + ... + 24628233.

It is an arithmetic number, because the mean of its divisors is an integer number (320166457).

Almost surely, 2^2216536965 is an apocalyptic number.

It is an amenable number.

2216536965 is a deficient number, since it is larger than the sum of its proper divisors (1625460519).

2216536965 is a wasteful number, since it uses less digits than its factorization.

2216536965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49256388 (or 49256385 counting only the distinct ones).

The product of its digits is 583200, while the sum is 45.

The square root of 2216536965 is about 47080.1122025001. The cubic root of 2216536965 is about 1303.8420785349.

The spelling of 2216536965 in words is "two billion, two hundred sixteen million, five hundred thirty-six thousand, nine hundred sixty-five".