6211043663 has 4 divisors (see below), whose sum is σ = 6775684008. Its totient is φ = 5646403320.

The previous prime is 6211043639. The next prime is 6211043681. The reversal of 6211043663 is 3663401126.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6211043663 - 2⁶ = 6211043599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6211043063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 282320156 + ... + 282320177.

It is an arithmetic number, because the mean of its divisors is an integer number (1693921002).

Almost surely, 2^6211043663 is an apocalyptic number.

6211043663 is a deficient number, since it is larger than the sum of its proper divisors (564640345).

6211043663 is a wasteful number, since it uses less digits than its factorization.

6211043663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564640344.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 6211043663 is about 78810.1748697464. The cubic root of 6211043663 is about 1838.1806669396.

Adding to 6211043663 its reverse (3663401126), we get a palindrome (9874444789).

The spelling of 6211043663 in words is "six billion, two hundred eleven million, forty-three thousand, six hundred sixty-three".