6531246240089 has 2 divisors, whose sum is σ = 6531246240090. Its totient is φ = 6531246240088.

The previous prime is 6531246240061. The next prime is 6531246240137. The reversal of 6531246240089 is 9800426421356.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3585217280089 + 2946028960000 = 1893467^2 + 1716400^2 .

It is a cyclic number.

It is not a de Polignac number, because 6531246240089 - 2⁴⁰ = 5431734612313 is a prime.

It is not a weakly prime, because it can be changed into another prime (6531246240019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3265623120044 + 3265623120045.

It is an arithmetic number, because the mean of its divisors is an integer number (3265623120045).

Almost surely, 2^{6531246240089} is an apocalyptic number.

It is an amenable number.

6531246240089 is a deficient number, since it is larger than the sum of its proper divisors (1).

6531246240089 is an equidigital number, since it uses as much as digits as its factorization.

6531246240089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2488320, while the sum is 50.

The spelling of 6531246240089 in words is "six trillion, five hundred thirty-one billion, two hundred forty-six million, two hundred forty thousand, eighty-nine".