6531246240061 has 2 divisors, whose sum is σ = 6531246240062. Its totient is φ = 6531246240060.

The previous prime is 6531246240041. The next prime is 6531246240089. The reversal of 6531246240061 is 1600426421356.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4921631325625 + 1609614914436 = 2218475^2 + 1268706^2 .

It is a cyclic number.

It is not a de Polignac number, because 6531246240061 - 2⁹ = 6531246239549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6531246239996 and 6531246240023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6531246240041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3265623120030 + 3265623120031.

It is an arithmetic number, because the mean of its divisors is an integer number (3265623120031).

Almost surely, 2^{6531246240061} is an apocalyptic number.

It is an amenable number.

6531246240061 is a deficient number, since it is larger than the sum of its proper divisors (1).

6531246240061 is an equidigital number, since it uses as much as digits as its factorization.

6531246240061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 6531246240061 in words is "six trillion, five hundred thirty-one billion, two hundred forty-six million, two hundred forty thousand, sixty-one".