6822399521 has 16 divisors (see below), whose sum is σ = 8280048000. Its totient is φ = 5490955008.

The previous prime is 6822399499. The next prime is 6822399581. The reversal of 6822399521 is 1259932286.

It is not a de Polignac number, because 6822399521 - 2⁶ = 6822399457 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6822399581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 211946 + ... + 242003.

It is an arithmetic number, because the mean of its divisors is an integer number (517503000).

Almost surely, 2^6822399521 is an apocalyptic number.

It is an amenable number.

6822399521 is a deficient number, since it is larger than the sum of its proper divisors (1457648479).

6822399521 is a wasteful number, since it uses less digits than its factorization.

6822399521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454088.

The product of its digits is 466560, while the sum is 47.

The square root of 6822399521 is about 82597.8178949057. The cubic root of 6822399521 is about 1896.6144252764.

The spelling of 6822399521 in words is "six billion, eight hundred twenty-two million, three hundred ninety-nine thousand, five hundred twenty-one".