6523331993 has 2 divisors, whose sum is σ = 6523331994. Its totient is φ = 6523331992.

The previous prime is 6523331957. The next prime is 6523332031. The reversal of 6523331993 is 3991333256.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4901820169 + 1621511824 = 70013^2 + 40268^2 .

It is a cyclic number.

It is not a de Polignac number, because 6523331993 - 2¹⁶ = 6523266457 is a prime.

It is not a weakly prime, because it can be changed into another prime (6523331923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3261665996 + 3261665997.

It is an arithmetic number, because the mean of its divisors is an integer number (3261665997).

Almost surely, 2^6523331993 is an apocalyptic number.

It is an amenable number.

6523331993 is a deficient number, since it is larger than the sum of its proper divisors (1).

6523331993 is an equidigital number, since it uses as much as digits as its factorization.

6523331993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 393660, while the sum is 44.

The square root of 6523331993 is about 80767.1467429672. The cubic root of 6523331993 is about 1868.4859099700.

The spelling of 6523331993 in words is "six billion, five hundred twenty-three million, three hundred thirty-one thousand, nine hundred ninety-three".