6523834721 has 2 divisors, whose sum is σ = 6523834722. Its totient is φ = 6523834720.

The previous prime is 6523834717. The next prime is 6523834739. The reversal of 6523834721 is 1274383256.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5203602496 + 1320232225 = 72136^2 + 36335^2 .

It is a cyclic number.

It is not a de Polignac number, because 6523834721 - 2² = 6523834717 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (6523834781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3261917360 + 3261917361.

It is an arithmetic number, because the mean of its divisors is an integer number (3261917361).

Almost surely, 2^6523834721 is an apocalyptic number.

It is an amenable number.

6523834721 is a deficient number, since it is larger than the sum of its proper divisors (1).

6523834721 is an equidigital number, since it uses as much as digits as its factorization.

6523834721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 41.

The square root of 6523834721 is about 80770.2588890242. The cubic root of 6523834721 is about 1868.5339077343.

The spelling of 6523834721 in words is "six billion, five hundred twenty-three million, eight hundred thirty-four thousand, seven hundred twenty-one".