6506198651 has 2 divisors, whose sum is σ = 6506198652. Its totient is φ = 6506198650.

The previous prime is 6506198641. The next prime is 6506198719. The reversal of 6506198651 is 1568916056.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6506198651 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6506198596 and 6506198605.

It is not a weakly prime, because it can be changed into another prime (6506198641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3253099325 + 3253099326.

It is an arithmetic number, because the mean of its divisors is an integer number (3253099326).

Almost surely, 2^6506198651 is an apocalyptic number.

6506198651 is a deficient number, since it is larger than the sum of its proper divisors (1).

6506198651 is an equidigital number, since it uses as much as digits as its factorization.

6506198651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 388800, while the sum is 47.

The square root of 6506198651 is about 80661.0107238931. The cubic root of 6506198651 is about 1866.8486343901.

The spelling of 6506198651 in words is "six billion, five hundred six million, one hundred ninety-eight thousand, six hundred fifty-one".