6523451609 has 2 divisors, whose sum is σ = 6523451610. Its totient is φ = 6523451608.

The previous prime is 6523451587. The next prime is 6523451617. The reversal of 6523451609 is 9061543256.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4079632384 + 2443819225 = 63872^2 + 49435^2 .

It is a cyclic number.

It is not a de Polignac number, because 6523451609 - 2¹⁶ = 6523386073 is a prime.

It is not a weakly prime, because it can be changed into another prime (6523451639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3261725804 + 3261725805.

It is an arithmetic number, because the mean of its divisors is an integer number (3261725805).

Almost surely, 2^6523451609 is an apocalyptic number.

It is an amenable number.

6523451609 is a deficient number, since it is larger than the sum of its proper divisors (1).

6523451609 is an equidigital number, since it uses as much as digits as its factorization.

6523451609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 194400, while the sum is 41.

The square root of 6523451609 is about 80767.8872386792. The cubic root of 6523451609 is about 1868.4973304856.

The spelling of 6523451609 in words is "six billion, five hundred twenty-three million, four hundred fifty-one thousand, six hundred nine".