6531099061 has 2 divisors, whose sum is σ = 6531099062. Its totient is φ = 6531099060.

The previous prime is 6531099013. The next prime is 6531099101. The reversal of 6531099061 is 1609901356.

It is an a-pointer prime, because the next prime (6531099101) can be obtained adding 6531099061 to its sum of digits (40).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5897318436 + 633780625 = 76794^2 + 25175^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6531099061 is a prime.

It is a congruent number.

It is a weakly prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3265549530 + 3265549531.

It is an arithmetic number, because the mean of its divisors is an integer number (3265549531).

Almost surely, 2^6531099061 is an apocalyptic number.

It is an amenable number.

6531099061 is a deficient number, since it is larger than the sum of its proper divisors (1).

6531099061 is an equidigital number, since it uses as much as digits as its factorization.

6531099061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43740, while the sum is 40.

The square root of 6531099061 is about 80815.2155290079. The cubic root of 6531099061 is about 1869.2271927512.

The spelling of 6531099061 in words is "six billion, five hundred thirty-one million, ninety-nine thousand, sixty-one".